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

A 1:2 billion-scale solar system leads visitors into this German university town.

Rich with fauna and flora, nature-lovers can walk across the sea at this UNESCO World Heritage spot.

Inspired by "The Starry Night" this Dutch bike path turns into a glowing work of art each night.

This small town in the Netherlands has no roads but instead, miles of canals and over 100 bridges.

Peek through a transparent pyramid and drink in the mountain made of books.

When Azorean green tea meets volcanic hot springs water, a luminous brew is born.

Part museum, part piece of Arthurian-inspired history, this stately hall attracts King Arthur fans from miles away.

This enormous secondhand bookstore inside a Victorian train station sparked the "Keep Calm and Carry On" craze.

An off-the-beaten-path boutique stuffed with an eclectic collection of upcycled goods.

One of the oldest medical collections in Europe focusing on rare surgical instruments.

This stately mansion, built in 1787 by America's first Secretary of the Navy, is rumored to be one of the most haunted buildings in Washington, DC.

Sniff the Titan Arum's rotting flesh.

Ride the subways of yesteryear.

The one-stop shop for all of your superhero (or evil arch-nemesis) needs.

New York's oldest magic store.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

This observatory within Europe's first dark sky park offers stunning views of the night sky.

Summer in Scotland begins with a spectacularly wild and colorful event rooted in ancient pagan traditions.

At high tide this strange footbridge appears to have no purpose whatsoever.

The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.