In the Scottish Highlands, this 13th-century castle ruin is hidden at the end of a farm track.

This enchanting hill is home to fairy lore and a sinister local mystery.

A honeycomb-like structure of interlocking shelves creates a beehive of books.

This collection of lakeside pagodas and temples are flanked by giant lions, tigers, and dragons as well as their welcoming maws.

An extraordinary collection of vampire-themed antiques lurks on the second floor of a store.

Turns out you can see the world without ever leaving Maine.

With over 340,000 artifacts and counting, there is something for everyone, often called the "Smithsonian of the West."

Once the site of the Hawaiian monarchy, this building was originally designed as a palace.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

This museum of Hawaiian and Polynesian culture is the legacy of the last descendant of the Kamehameha Dynasty.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

Every year, the town of Menton, France, turns lemons and oranges into giant sculptures depicting windmills, dragons, and more.

The construction of a tram line unveiled hidden remnants of the old medieval city.

This massive blockhead sculpture hides an entire library.

Artist's eccentric property excessively decorated with found objects and work of his own.

On Waikīkī Beach, a monument to four extraordinary individuals of dual male and female spirits who brought the healing arts from Tahiti to Hawai'i.

During the solar phenomenon "Lahaina Noon" this bendy, curvy sculpture forms a perfectly circular shadow on the ground.

You can cross from one country to another in a single hop on this little bridge.

"The Hoppiest Place in the World" holds the world’s largest collection of bunny memorabilia and is a singular testament of a couple's devotion to all things Leporidae.

A church of bones, decorated with 40,000 human skeletons.

The hallucinogenic center of the ancient world.

A kaleidoscopic warehouse-maze of handmade neon signs.

The home of possibly the least-loved U.S. president stands as a sort of unpopular Monticello.

The first of Lancaster's "rural cemeteries."