A peaceful, unique botanical garden complete with waterfalls, mini islands, and swans.

Manatees congregate around a power plant's discharge canal where the water is especially warm.

Florida castle built with aluminum printing plates.

This ancient sinkhole-turned-healing-pool is a treasure trove of archeological discoveries and may even be the Fountain of Youth.

These crumbling foundations are all that remain of the once-stately 1840s manor that gave the town of Bradenton its name.

A legendary boxing venue and ring featured in Rocky V.

The abandoned coal loading dock is a canvas for unsanctioned art.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

A layered tribute to the work of mosaicist Isaiah Zagar.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

A charming remnant of 19th-century fishing towns sits on Michigan’s Leelanau Peninsula.

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

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

This lone tree and dramatic sandstone outcropping are so beloved by Michiganders they can be found on one of the state’s coins.

Though its branches are painted bright colors by generations of locals, the tree is said to be a haunted portal to hell.

This shallow cave got its name from copious amount of human bones found inside.