Pensacola's UFO home has withstood many hurricanes—just as the experimental 1960s design intended.

One of the only Florida forts to remain in the hands of the Union all through the Civil War still stands as a historic stronghold.

A Circus legend leaves an unexpected endowment.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

Flip your own pancakes in this old sugar mill within a Florida state park.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

The site where Poe "in great distress, and ... in need of immediate assistance" likely died.

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

This Florida sinkhole hides a rainforest-like micro-environment in its depths.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

See massive fossils that are over 200 million years old in northeastern Arizona.

A reproduction of earth's many biomes.

Eighty million natural history specimens call this gargantuan museum home.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

This giant middle finger statue sends an unambiguous message to Italy's bankers.

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

A fascinating insight into daily life in the Eastern Bloc.

The most visited, and possibly most controversial, museum in Germany.

This incredible stone temple is a monument to death, victory, and fantasy architecture.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The remains of an idyllic small town built for the film 'Big Fish' still stand around a rundown main street.

Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.