DETROIT (Michigan News Source) – The oldest public aquarium in the U.S. is celebrating its 120th anniversary on Detroit’s Belle Isle this weekend.

The Belle Isle Aquarium, designed by renowned Detroit architect Albert Kahn, houses a variety of freshwater fish, reptiles, and even a giant Pacific octopus. The building’s unique architecture, featuring a stone carving of Neptune above the Beaux-Arts entryway, complements the nearby Anna Scripps Whitcomb Conservatory.

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To mark the 120th anniversary of its 1904 opening, the aquarium will host a special event on Sunday, August 18, with family-friendly activities such as bounce houses, a water conservation-themed story time, and interactive crafts. The event will run from 11 a.m. to 4 p.m. and will include free food and music by Detroit DJ Drummer B.

Located at 3 Inselruhe Ave., the Belle Isle Aquarium is open from 10 a.m. to 4 p.m. Thursday through Sunday until August 29. Admission is free with entry to Belle Isle, though a $5 donation is suggested. Vehicle entry to Belle Isle is free with a Michigan DNR Recreation Passport, or $14 annually for Michigan-registered vehicles, $40 annually for out-of-state vehicles, or $11 for an out-of-state day pass.