Teradomari Aquarium brings together a large first-floor tank, smaller displays for close observation on the second floor, and a third-floor viewing room overlooking the Sea of Japan. Come for the fish, then consider the viewing room for a different perspective on the sea.
Featured image: nubobo / Wikimedia Commons Image source · CC BY 2.0 https://creativecommons.org/licenses/by/2.0/ · Historical exhibit photograph: May 4, 2015. Displays may change. Resized and converted to WebP.
Why visit
The appeal is the contrast in scale: a large tank to take in as a whole, followed by smaller displays that invite a closer look. The Sea of Japan viewing room adds a coastal outlook to the aquarium visit, making the building itself part of the experience rather than simply a collection of tanks.
Plan your visit
Ordinary individual admission is JPY700 for adults, JPY450 for junior-high students, JPY350 for elementary students, and JPY200 for children aged three or older who are not yet in elementary school. Group discounts are separate.
The address is 9353-158 Teradomari Hanatate, Nagaoka City. For drivers, the city lists parking for 150 ordinary cars and eight buses. For public-transport planning, the operator publishes outward and return bus tables for Nagaoka and Teradomari stations.
Make the most of your visit
Try giving the large tank an unhurried look before choosing details to focus on in the smaller displays. Rather than building the visit around a particular species or show, consider the contrast between broad tank views and close observation as the main attraction.
Planning notes
Information checked on 2026-10-21: the operator lists opening hours of 09:00–16:30, with last admission at 16:00. Cash and listed electronic-money methods are accepted; credit cards are not.
Scheduled closure: December 2, 2026.
Scheduled closure: December 31, 2026.
Scheduled closure: January 1–2, 2027.
Scheduled closure: February 10, 2027.
Scheduled closure: March 3, 2027.
Scheduled closure: March 10, 2027.
For buses, check the latest Echigo Kotsu timetable for both directions and your travel date.
Displays, species and shows may change. Distant views of Sado depend on the weather.
Practical information
Highlights
Highlights: The aquarium has a large first-floor tank, smaller displays for close observation on the second floor, and a third-floor Sea of Japan viewing room. Species and shows may change; distant Sado views depend on weather.
Information as of .
Opening hours
Open 09:00–16:30, last admission 16:00.
Information as of .
General admission
Ordinary individual admission: adults JPY700, junior-high students JPY450, elementary students JPY350, children aged three and older below elementary school JPY200. Group discounts are separate.
Information as of .
Closures and restrictions
Closures: Consult the operator’s published calendar for maintenance and holiday closing dates.
Information as of .
Practical detail
Planning notes: Cash and listed electronic-money methods are accepted; credit cards are not accepted.
Information as of .
Access
Access: 9353-158 Teradomari Hanatate, Nagaoka City. The city lists parking for 150 ordinary cars and eight buses.
Information as of .
Access
Access: The operator publishes outward and return bus tables for Nagaoka and Teradomari stations, and directs visitors to Echigo Kotsu for the latest timetable. Recheck the service date and return journey before travel.
Information as of .
Closures and restrictions
Scheduled closure: December 2, 2026. Check the operator calendar for changes.
Information as of .
Published period: – .
Closures and restrictions
Scheduled closure: December 31, 2026. Check the operator calendar for changes.
Information as of .
Published period: – .
Closures and restrictions
Scheduled closure: January 1–2, 2027. Check the operator calendar for changes.
Information as of .
Published period: – .
Closures and restrictions
Scheduled closure: February 10, 2027. Check the operator calendar for changes.
Information as of .
Published period: – .
Closures and restrictions
Scheduled closure: March 3, 2027. Check the operator calendar for changes.
Information as of .
Published period: – .
Closures and restrictions
Scheduled closure: March 10, 2027. Check the operator calendar for changes.
Information as of .
Published period: – .
Useful links
Teradomari Aquarium facilities
Teradomari Aquarium visitor guide
Information based on checks dated 2026-10-21.