This niche museum devoted to ancient religious artifacts is shaped like the very thing it displays.

A salty red wasteland in Tanzania is a breeding spot for endangered flamingos.

A grumpy old water goblin guarding an old mill on the Devil’s Stream in Prague.

This magenta statue commemorates the legendary marriage between a mermaid and the city's founder.

These warring psychedelic crags commemorate an unsuccessful military operation.

Nature took her revenge on the "Wickedest City in the World."

This bizarre residential building is the masterpiece of Von Jour Caux, the “Gaudí of Japan.”

A lingering bit of Space Race nostalgia lies in the middle of the desert.

Abandoned city hidden from the world by tropical forest and isolation on the coast of Kenya.

Roman ruins top white travertine terraces formed by ancient hot springs.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

Legend has it that this stone moves down to the river sometimes to have a drink.

An architect transformed this abandoned cement factory into his castle-like workshop.

America's post-nuclear-attack chambers of Congress.

This harrowing climb along West Virginia's jagged spires is one of the only Via Ferrata on America's east coast.

Hikers can still stroll beneath the long conveyer of this abandoned mining facility hidden in a West Virginia river gorge.

Home of a 28-foot tall stalagmite known as the War Club.

Visit a replica of the estate where Aaron Burr allegedly plotted a treasonous scheme against the United States.

Take a steam-powered ride straight out of the past on this Appalachian rail line.

This lookout tower built in the 1930s is now an in-demand cabin with what might be the best view of the Seneca State Forest.

This former fire tower is now a rustic observatory that offers amazing views of eagles, hawks, and the Appalachian Mountains.

A beautiful hidden gem in central West Virginia.

This shale formation along the Appalachian Trail once inspired the third president of the United States.

The unique building practices of the Batammariba reflect the community's deep reverence for and connection to the earth.