Explore 10 acres of environmental sculptures.

The sole remaining outpost of a once-thriving South Carolina chain still sells “pic-a-nic” baskets.

The Boston home of a conductor on the Underground Railroad.

4,000 monkeys used for medical testing on an island off of South Carolina.

An early work of the architect Álvaro Siza Vieira, these swimming pools blend into the beach.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

One of the world's oldest universities houses an incredible collection of anatomical models, mummified body parts, and human bones.

A haunting collection of the vanished and disappearing natural world.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

Museum on French naval history, with magnificent figureheads, a historic diving suit, and a boat used by Napoleon.

Former hunting lodge of a duke who was an avid collector of impressionist works.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

A copy of the Statue of Liberty greets visitors to the birthplace of Auguste Bartholdi.

Notorious artist squat renovated into legal studios.

An Iron Age fort on the edge of a seaside cliff offers a glimpse into an ancient, mystical world.

While only two of the ancient buildings at this site are actually churches this was one of the earliest Irish pilgrimage sites ever.

A moody and picturesque riverside ruin overgrown with vegetation.

A hidden tunnel of bones in one of Malta's oldest churches.

This subterranean necropolis holds three floors of antler-dug grave caves.

Overshadowed by other, more famous Maltese catacombs, this ancient burial chamber has one of the best examples of a ritual agape table.

This unique building in the main square stands out among the city's typically Baroque architecture.

Enigmatic tombs and cave dwellings on the outskirts of a rural village.

These lesser-known Maltese catacombs date back over 1,700 years.

The ruins of a megalithic monument sit right in the garden of a luxurious Maltese resort.