America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

This ancient holy well is older than much of the city that surrounds it.

This former small-town cinema palace was built with the remains of a luxury liner.

As part of an 800-year-old tradition, a man parades through town covered in a suit made out of spiky burrs.

Scotland's first free lending library, which protects literacy through inheritance.

People leave coins atop an unusual grave marker in one of Scotland's oldest burial grounds.

This waterfall is one of the most spectacular natural features in the Scottish Lowlands.

This enchanting hill is home to fairy lore and a sinister local mystery.

A red sandstone freestanding monolith rises out of the sea in northern Scotland.

The heart of a Scottish legend had a centuries-long journey before reaching its final resting place.

A library where thousands of books explain how to avoid another Great Recession.

This Scottish bridge seems to compel dogs to leap to their death.

Spend the night in this formerly abandoned traditional Scottish village.

360° views of the city plus five floors of optical illusions and hands-on science.

This inconspicuous pharmacy went down in history as the first gas station in the world after fueling the first road trip ever taken.

World's only telecommunication tower with a wooden pinnacle.

According to a satirical conspiracy theory that persists today, this German city of 300,000 is a hoax invented by the CIA.

This museum tells the story of lake dwellers from 4000 BC to 850 BC, replete with stilt houses and goats.

In this truly magical place, rent hasn't been raised since the year 1520.

What was once thought to be a wellspring of unicorn bones is actually just a prehistoric burial site.

This unique Renaissance castle was turned into a home for Nazi occultism.

A 12th-century fortress containing some of Berlin's oldest buildings.

Floating swimming pool within a moored vessel.

Someone loved this song enough to carve all of its lyrics onto a tree trunk in a Berlin park.