A homemade anatomical collection of medical anomalies and accidental catastrophes.

The Tübingen University anatomical collection hosts an example of an extremely rare medical phenomenon.

The only museum about the history of dentistry in Canada.

This one-room doctor's office has been moved twice, and now lives on as a museum.

These large stone piles are ancient burial sites.

The highest concentration of petroglyph sites in Gold Butte National Monument, plus an improbable early 20th-century dam.

Neolithic burial chambers hidden beside a village school.

One of the oldest structures in Helsinki is this burrow grave that dates back to the Bronze Age.

How a bat poo mine became a major Native American archaeological site—and connections to legendary red-haired giants.

On a corner of the Ardmeanach peninsula on the Isle of Mull, a 50 million-year-old fossil tree hides in the coastal cliffs.

A striking depiction of Teotihuacan's mysterious "Spider Woman."

Bits of flat terrain surrounded by cliffs make one of the most beautiful landscapes in the Azores.

One of few vertical lava tubes in the world accessible by foot.

Take the most scenic fjord landscape in Norway and add dramatic red cliffs, warm clear water, and playful dolphins.

An ancient temple in the middle of a residential neighborhood encapsulated by a beautiful tree.

The only natural cave bath in all of Europe.

A natural resemblance of the monster of film lore.

Two gushing waterfalls of hot spring water within a block of each other.

One of the "twins" in these falls on the Snake River was sacrificed for hydropower generation in the 1930s.

In the heart of Luxembourg's "little Switzerland" weaves a breathtaking natural sandstone canyon with a mythological past.

A 30-mile-long glacially-carved canyon leads to a massive pair of glaciers.

A spectrum of colors awaits visitors to one of Mexico's most gorgeous bodies of water.

A massive rock in the surf steeped in legends.

This enormous sinkhole hides a secret world created from divine wrath.