This "thrice-cursed" island is allegedly home to Captain Kidd's lost treasure.

This park is home to a massive bird sanctuary.

The last vessel built by a submarine pioneer stands as a monument to his legacy.

An Escher-inspired library dedicated to the wonders of the human mind, yet closed to the public.

Home to a protest movement, a bombing, and a dramatic change in labor history.

A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

Unrepaired walls from a 1920 anarchist bomb attack.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

After a long career, a disastrous sinking, and a half-successful salvage, this Naval vessel-turned-artificial reef ended up exactly where she was supposed to—with a little help from nature.

A unique collection of diving equipment spanning antiquity to the present day.

The largest freshwater lake in the Florida Keys.

The unique collection includes bronze cast handprints of some of America's most famous astronauts.

A building so large that it has its own weather.

A Circus legend leaves an unexpected endowment.

This legendary "evil" doll has been haunting the citizens of Key West for over 100 years.

Stay in a room with a view... of the bottom of the ocean.

Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

A gleaming white tower in ornate Indian style soars above the low-slung bungalows of north Tampa.

The site of one of the strangest disasters in history—a wave of deadly molasses traveling at 35 mph.

An underground wonderland in Iowa.

The oldest university museum west of the Mississippi retains its 19th century feel.