This ancient Irish religious site is covered in ancient carvings, many of which have barely aged.

One of Ireland's most infamous prisons for rebels including men, women and children.

Electrical pylon in the shape of Disney's beloved mouse.

This grand Spanish-Cuban restaurant has been serving customers for more than a century.

The museum chronicling a treasure hunter's dream, fulfilled.

This stretch of highway is said to be haunted by ghosts of settlers whose graves were paved over.

A graveyard of bathyspheres and diving bells paints a weirdly accurate account of ocean exploration's rickety history.

An idyllic swimming pool tells the tale of Hemingway's trouble with women.

A Florida college boasts the world's largest single-site collection of structures designed by Frank Lloyd Wright.

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

St. Augustine's record-setting narrow street was designed to protect against pirates.

The third tallest lighthouse in America once guided author Stephen Crane to safety.

Like Mardi Gras, only everyone's a pirate.

A building so large that it has its own weather.

This abandoned NASA launch site is now a memorial to a trio of astronauts who were killed there.

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

The island residents are known for taking their quirky sense of humor with them to the grave.

The ruins of a once-thriving sugarcane plantation that was burned in the Second Seminole War.

These former theme park figures have a new lease on life outside a water plant-turned-restaurant.

A circus legend leaves an unexpected endowment.

It's a pretty creepy lock-up.

A monument celebrating the idea of reaching inaccessible places.

The first custom-designed building to showcase the works of Dale Chihuly is a wonderland of glass and light.

Strange beasts lurking in a garden are all that remain of a quirky, short-lived theme park.