The Beaux-Arts aquarium boasts a vast collection of saltwater and freshwater fish on an island in the Detroit River.

Advice-columnist's bell tower, paid for with pennies.

Concrete igloos standing across from what remains of the Michigan Central train depot.

This feline raises a friendly paw at drivers barreling toward the freeway.

This sprawling bookstore spans four floors and has more than a million books in stock.

The only surviving prototype for Buckminster Fuller's house of the future.

This unusual three-way wooden foot bridge spans two rivers at once.

On the right bank of the Grand River a plaque remembers an imaginary painter who once awaited his youth.

In Grand Rapids, Michigan, a marker honors the creation story of a proud fictional culture.

An angular maze of concrete in Grand Rapids acts both as public art and as a staircase for fish traveling upstream.

A miniature representation of Canadian cities and landmarks in incredible—and sometimes hilarious—detail.

Ghost stories surrounded this “castle,” the only structure from a huge mansion that was never built.

Just outside the Ohio Supreme Court sits a testament to justice.

The walls of the statehouse tell the story of Ohio’s prehistoric past.

An unassuming 13-acre park is home to over 12,000 roses.

This retired stagecoach tavern is the oldest building in Cleveland.

This indie movie theater is one of only three surviving Mayan-themed theaters designed by “Detroit’s greatest theater architect.”

This state-of-the-art planetarium takes architectural inspiration from the sun itself.

Largest tulip festival in America, includes fireworks, a parade, and a carnival.

The park is home to the United States's only still-operating Dutch windmill.

A singular collection of hand-built art deco cars are held in a building with style to match.

The writing studio of an American adventure author, built in the style of a medieval castle.

Ancient petroglyphs discovered only after a massive fire swept across Michigan in the 1880s.

World's largest Christmas store.