The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

Treehouse motel and treehouse-building school.

Skeletons dressed in extravagant 18th century royal costumes cavort in the aisles of this German basilica.

Legends surround this jagged rock formation in the New Mexico desert.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

This museum houses an imposing skeleton army comprised of creatures great and small.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

Rent out a glass igloo to watch the Northern Lights like you live in the future.

This wildly-tiled artist's palace is a living and growing account of the creator's life, loves, and labors.

No one knows how this Pacific Northwest spruce tree came to have so many trunks.

The longest living non-clonal organisms on Earth.

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

The 953 windows undoubtedly make this the world's most beautiful screened porch.

An antiquated German apothecary on Chicago's North Side.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Nine Gardens in one—with tea service.

This odd Chilean waterfall-cano hotel must be entered via a rope bridge.

This French ghost town from World War II has been left as a memorial to German atrocities during World War II.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

Centuries-old bridges grown from tangled roots.

Rome's semi-secret peephole vista is also a former Crusader stronghold.