Okinawa, Japan: Ryukyu Kingdom History and the Pacific's Clearest Blue Water

Okinawa is the largest island of the Ryukyu archipelago, a chain of islands that stretches between Kyushu and Taiwan. For most of its history, Okinawa was the center of the Ryukyuan Kingdom — an independent maritime state with its own language, culture, and trade networks that connected China, Japan, and Southeast Asia. Japan annexed the kingdom in 1879, and Okinawa became a Japanese prefecture. The island then bore the heaviest land fighting of the Pacific War in 1945, in the Battle of Okinawa, which killed roughly one third of the civilian population. American administration lasted until 1972. All of this history is still present in the landscape and in Okinawan consciousness.

Shuri Castle, the hilltop palace complex of the Ryukyuan kings, is the dominant historical site. It is a UNESCO World Heritage property and one of the most architecturally distinctive castles in Japan — closer in style to Chinese palatial architecture than to Japanese castles, with vermilion lacquer walls and curved roof lines. The main hall was rebuilt in 1992 following its destruction in the Battle of Okinawa, and was destroyed again by fire in 2019; reconstruction is ongoing, and sections of the site are being rebuilt systematically. The approach through the outer gates and across the castle grounds is fully accessible.

Kokusai-dori, Naha's main tourist street, runs for 1.6 kilometres from the Tomari port area through the city center and is dense with restaurants, craft shops, and department stores. The Makishi Public Market, reached via an arcade off Kokusai-dori, sells fresh produce, fish, and the ingredients of Okinawan home cooking: goya (bitter melon), pork in all its forms (ears, face, belly), tofu, and seaweed. The cuisine reflects the island's history — heavier on pork and bitter vegetables than mainland Japanese cooking, with Chinese and Southeast Asian influences visible in the preparation.

The Peace Memorial Park at Itoman, 40 minutes south of Naha, is the main memorial to the Battle of Okinawa. The Cornerstone of Peace lists by name every person killed in the battle, military and civilian, regardless of nationality — American, Japanese, Okinawan, and Korean names are all included. The approach through the park's gardens to the stone slabs carrying the names is designed for contemplative walking.

Okinawa is one of the best family cruise ports in Asia, anchored by the Churaumi Aquarium in the Ocean Expo Park on the island's north — one of the world's great aquariums. The whale shark tank, holding three resident whale sharks, is the centrepiece, and the daily feeding shows draw crowds for good reason. The surrounding Ocean Expo Park has a native Okinawan village, manatee pool, and marine science museum. Budget a full half-day for the park; it's roughly 90 minutes from the main port at Naha, so confirm your ship's schedule allows the round trip.

For families staying in Naha, Okinawa World in the south is the practical alternative: a cave complex (Gyokusendo), a Habu Park with snake shows (dramatic for older children), and a reconstructed ryukyu village where craftspeople demonstrate weaving and pottery. The cave walk is appropriate for children old enough to walk independently — strollers don't fit the passage. Naha's Kokusai-dori (International Street) is the shopping and food hub, manageable for all ages and walkable from the pier area. Okinawa's beaches, particularly Emerald Beach within Ocean Expo Park, are fine-sand and calm — genuinely excellent for families who want water time alongside the sightseeing.

Tipping is not done in Japan, and Okinawa is no exception. At Naha's Kokusai-dori restaurants, Shuri Castle's café, or any izakaya in the Makishi covered market — the price on the menu is the price you pay. Offering a gratuity beyond the bill can unsettle staff, who are trained to provide excellent service as a professional standard, not as a means of earning extra income.

The Japanese yen (JPY) is the only currency. Carry cash for smaller restaurants, market stalls, and entrance fees; ATMs at 7-Eleven and Japan Post bank branches in Naha reliably accept foreign cards. Most larger establishments near the tourist areas (including Okinawa World and the aquarium in Motobu) accept Visa and Mastercard, but smaller local shops and food stalls are frequently cash-only. Taxis in Okinawa are metered — pay the meter. Monorail tickets from the Tomari Ferry Terminal area can be purchased by card or cash at the station machines. There is no need to carry more cash than you estimate spending.

Okinawa's cuisine is a living archive of the Ryukyu Kingdom's independent history, combining Japanese, Chinese, and Southeast Asian influences into something entirely its own. The defining dish is champuru — a loose category of stir-fries incorporating goya (bitter melon), tofu, egg, and spam or corned beef (a legacy of the American military occupation, now fully absorbed into island identity). Goya champuru is an acquired taste but an authentic expression of the island. Okinawa soba is not traditional Japanese soba at all: thick wheat noodles in a clear pork-bone broth topped with sōki (braised pork rib) and kamaboko fishcake — the single best cheap meal available at ¥700–1,000. The Makishi Public Market in Naha is a food destination: the second floor restaurants will cook any raw seafood you buy downstairs, including local sea grapes (umi-budō — tiny clusters of briny green spheres that pop in your mouth), mozuku seaweed, and various reef fish. Orion Beer, brewed on the island, is the local lager — crisp, light, and consumed alongside izakaya dishes at tables that stay open late. Awamori is Okinawa's native spirit, distilled from Thai indica rice rather than Japanese sake rice, typically aged in clay pots and stronger than sake; sample it at a traditional awamori specialist bar.

Okinawa cruise ships dock at Naha New Port, about 4 km from the Kokusai-dori international shopping street and Shuri Castle. A free or low-cost port shuttle runs to central Naha during port calls; alternatively, the Yui Rail monorail (Okinawa's only rail line) has a station about 15 minutes by taxi (JPY 1,200–1,500) from the pier and covers the main tourist corridor from Naha Airport to Shuri for JPY 230–350 per trip.

Taxis from the pier to Kokusai-dori cost JPY 1,500–2,000 (USD 10–13). No Uber or app-based taxis operate in Okinawa. For the northern beaches, Churaumi Aquarium, and Cape Manzamo (60–80 km north), rental cars from Naha Port area or a ship excursion are the right approach. Traffic on the expressway heading north can be heavy mid-morning; allow extra time. English signage on the monorail and at major tourist sites is good. **Verdict: port shuttle or taxi to Kokusai-dori; monorail within Naha; rental car for northern sights.**

The Ryukyu Kingdom (1429–1879) was an independent maritime empire that grew prosperous by trading between China, Japan, Korea, and Southeast Asia simultaneously — a delicate diplomatic balance that required paying tribute to both the Chinese Emperor and the Japanese Satsuma domain. Okinawa's Shuri Castle was the kingdom's seat of power and symbol of its distinct culture, music, and textile traditions (Ryukyuan bingata cloth). Japan's Meiji government forcibly abolished the kingdom in 1879 and absorbed it as Okinawa Prefecture, suppressing the Ryukyuan language and culture. The Battle of Okinawa (April–June 1945) was the Pacific War's bloodiest campaign — an estimated 200,000 people died, including over 100,000 Okinawan civilians. The U.S. administered the islands until 1972 reversion to Japan; a significant American military presence remains a defining and contested feature of contemporary Okinawan life.

Okinawa was an independent Ryukyu Kingdom until Japanese annexation in 1879, and Okinawans retain a distinct cultural identity — more relaxed and tropical than mainland Japan, and proud of it. Standard Japanese customs apply: bow slightly when greeting, remove shoes before entering traditional establishments (look for the step at the entrance), avoid pointing chopsticks upright in food. Tipping is not done in Japan at all — it is considered rude; service is embedded in pricing, and staff are paid fair wages. Japanese is the language; English is spoken at Shuri Castle, the Churaumi Aquarium, and major tourist sites, but less so in daily commerce.

The Okinawan diet — goya (bitter melon), purple sweet potato, rafute (braised pork), Okinawa soba — is a genuine longevity food culture (Okinawa is a recognized Blue Zone) and is available at local restaurants away from the port. Traditional arts including kumi odori (a form of musical court dance listed by UNESCO as Intangible Cultural Heritage) and sanshin music are performed at Shuri Castle. The vibe is warm and laid-back — the phrase "nankurunaisa" (it will all work out) captures the Okinawan approach to daily life.

Okinawa's main port (Naha's Tomari Port or Urasoe New Port) is in an urban area without a beach directly at the pier, but world-class snorkelling and swimming are easily reachable.

**Naminoue Beach** in central Naha is the closest option — a small, sheltered urban beach within walking distance of Naha, calm and family-friendly, though modest in scale.

**Sunabe Seawall** in Chatan (20–25 minutes north by taxi or bus) is where locals and diving enthusiasts go for snorkelling. Coral begins immediately off the concrete seawall; parrotfish, angelfish, and occasional sea turtles are common sightings. No entry fee; bring your own snorkel or rent at nearby dive shops.

**Cape Maeda (Blue Cave)** near Onna Village (40 minutes north) is Okinawa's most famous snorkelling site — a sea cave with electric-blue light effects and dense marine life just offshore. Operators offer guided snorkel tours daily.

**The Kerama Islands** (Zamami, Tokashiki — 1–2 hours by high-speed ferry from Tomari Port) are among Japan's clearest waters, with coral gardens, sea turtles, and dolphins. A full day trip is required.

Reef-safe sunscreen is mandatory near any coral in Okinawa — conventional sunscreens bleach and kill coral, and signs at most reef sites remind you. Buy reef-safe brands locally if needed. Water is warm from May through October. Box jellyfish are occasionally present in summer; most organised snorkel operators provide protective suites.

Okinawa's cruise ships call at the **Naha Cruise Terminal** (adjacent to Tomari Port) or at **Naha Commercial Port**, both in the capital city Naha on the main island's south. Japan's comprehensive accessibility infrastructure — kerb cuts, tactile guidance paving, accessible stations, and helpful staff — applies throughout. **Kokusai-dori (International Street)** in Naha — Okinawa's main tourist strip — is flat, partially pedestrianised, and accessible along its 1.6 km length. **Shuri Castle** (the reconstructed Ryukyuan royal palace, partially destroyed in WWII and undergoing restoration after a 2019 fire) has a paved, gradual approach road and inner precinct pathways connecting the main structures — accessible to most areas by the outer circuit path with some ramp alternatives; specific hall interiors have steps. **The Okinawa Prefectural Museum and Art Museum** (Maebashi area) is modern and fully accessible with lift access. **American Village** in Chatan (30 minutes north by taxi) is a flat, purpose-built entertainment and shopping district with accessible facilities throughout. **Peace Memorial Park** (Mabuni, south, commemorating the Battle of Okinawa) has flat paved accessible paths through the memorial gardens; the Peace Memorial Museum is fully accessible. **Okinawa Expo Park and Churaumi Aquarium** (north of Naha, 1.5 hours) is a large flat park complex with a world-class accessible aquarium. The **Monorail (Yui Rail)** in Naha is fully accessible with elevator access at all stations, connecting the port area to Shuri Castle.

Okinawa is one of Japan's best shopping destinations, with Ryukyu cultural products that are genuinely unique to the islands. The **Kokusaidori (International Street)** in central Naha — about 40 minutes from Naha Port by taxi or the Yui Rail monorail — is the flagship strip: 1.6 km of gift shops, boutiques, and food stores.

**What to buy.** Bingata textiles (hand-resist-dyed cloth in vivid Ryukyu patterns), shisa lion dog ceramics in every size, and Ryukyu glass art (recycled glass with distinctive pastel bubbles) are the cultural cornerstones. Awamori — the Okinawan rice spirit, aged in clay pots and unique to the Ryukyu islands — ranges from everyday bottles ($8–15 USD) to premium 30-year aged expressions ($30–100+). The **Makishi Public Market** is ideal for food gifts: turmeric (ukon), sea grapes (umi budou), Okinawan soba seasonings, and dried purple yam sweets. Duty-free shopping is available with a valid passport at larger stores.

**Tip.** Prices are fixed; bargaining is not done in Japan.