Osaka Aquarium Kaiyukan

One of Japan’s largest and most famous aquariums, set in Osaka’s bay area at Tempozan. The building wraps around a huge central “Pacific Ocean” tank with whale sharks, rays and schooling fish, plus multiple other tanks themed around the Ring of Fire and Pacific Rim. Plan around 2—3 hours inside.

• Admission to Osaka Aquarium Kaiyukan for the date/time shown on your ticket.
• Access to the main Pacific Ocean tank and multiple habitat zones (Antarctica, Ecuador Rain Forest, Japan Forest, jellyfish area and more).
• Indoor walk-through route that gradually descends past the central tank and side exhibits.

• All ages: families, couples and marine-life nerds.
• Fully indoors and mostly step-free along ramps, making it a solid choice for rainy days and for most mobility levels (check the latest accessibility notes if you have specific needs).

• Arrive at Tempozan in Osaka’s bay area and walk from Osakako Station to the aquarium entrance.
• Scan your ticket, ride the escalator up, then begin the one-way route that starts with the Aqua Gate tunnel tank.
• Work your way down floor by floor around the giant Pacific Ocean tank, seeing whale sharks, rays, sharks and large schools of fish from different depths.
• Detour into side zones with penguins, otters, jellyfish, tropical reef fish and other themed habitats representing parts of the Pacific Rim.
• Finish in the lower levels and pass through the shop before exiting back into the Tempozan harbour area.

• Tickets / Price: Kaiyukan uses dynamic pricing; adult admission (high school age / ~16+ and over) typically starts from around ¥2,700, with lower prices for children and toddlers, and discounted senior tickets. Exact prices depend on date and ticket type and should be checked on the official site or booking page before you go.
• Operating hours: commonly around 10:00—20:00, with last admission about 1 hour before closing. Hours vary by season, weekends and special events; always confirm the schedule for your chosen date.
• Timed entry or specific date/slot may be required on busy days; advance purchase is strongly recommended in peak seasons and holidays.
• Flash photography, tripods and some equipment may be restricted in certain areas; follow on-site signage and staff instructions.

• Address: 1-1-10 Kaigan/Kaigandori, Minato-ku, Osaka 552-0022, Japan, a short walk from Osakako Station on the Osaka Metro Chuo Line.
• Expect it to be busy in the late morning and early afternoon; first entry or later evening can feel calmer.
• You can pair a visit with the nearby Tempozan Ferris Wheel, Tempozan Marketplace or a ferry across to Universal City.
• Allow extra time if you’re visiting with young kids—there are plenty of spots where they’ll want to stop and stare.

Book a dated ticket (adult prices from about ¥2,700), head to Osaka’s bay area, and spend 2—3 hours circling a massive whale-shark tank and Pacific-themed exhibits in one of Japan’s top aquariums.