Inubōsaki Marine Park

Inubōsaki Marine Park was a public aquarium in Choshi set on a hilltop with pink exterior walls and views over the Pacific Ocean. The facility distributed its collection of 350 marine species across two floors, housing freshwater fish from the Amazon on the first floor and sharks on the second.

The aquarium opened in 1954 under the name Choshi Aquarium and changed operators several times afterward. Management passed first to Keisei Electric Railway and later to Fuji Foods Corporation.

The park took its name from nearby Cape Inubōsaki, marking the easternmost point of Honshu's main island. Free school visits for kindergarten and elementary groups formed part of the regular program, making the facility a popular destination for local educational trips.

The facility sat at the easternmost tip of Honshu on a hilltop and offered sea views from its elevated position. Visitors could explore two floors with different focus areas, with the lower level presenting tropical freshwater species and the upper floor showing larger marine inhabitants.

Starting in 1993, the facility also displayed dinosaur exhibits, creating an unusual combination of prehistoric and marine displays within the same complex. This thematic mix made the park a curiosity among Japanese aquariums.