Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.

The graveyard is filled with beautiful funerary art and boasts breathtaking views of Florence.

Pompeii's less famous neighbor is still revealing her secrets.

Estonia's largest creative city is a vibrant bohemian hub located within a former industrial complex.

Renaissance villa and gardens complete with a tormented colossus.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

This "life-size" depiction of Mickey Mouse as a half-lobster is both whimsical and a bit creepy, standing guard over the Boston waterfront.

This Irish show cave is said to have been the site of a Viking massacre that claimed 1,000 lives.

These imposing walls and towers look more like the ruins of a fortress than a monastery.

Once the longest bridge in Ireland, this rusting span sits abandoned and overrun by nature.

A stunning medieval castle owned and restored by the famed actor Jeremy Irons.

One of the most popular megalithic sites in Ireland stands as a humbler version of Stonehenge.

These steps offer a breathtaking view of one of Europe's most besieged fortresses.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

With lush plants and flowers, huge trees, ponds, and hidden monuments, this place feels a bit like discovering Narnia.

This grassy, tree-lined hill shares a name with the much-loved novel that it inspired.

A rare labyrinth-style path carved into a historic hill.

This silent sentry in the crypt below a large Gothic cathedral is often knee-deep in water.

The longest hedge maze in the world.

It's possible to walk inside one of the largest Neolithic tombs in Britain.

Besieged by war, this castle ruin has crumbled into a peaceful picnic spot.

This park is home to a collection of important industrial and religious sites.