One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

An awe-inspiring mosque in Morocco with one of the tallest minarets in the world.

Thousands of narrow alleyways in an ancient medieval city make up what's believed to be the world's largest car-free urban zone.

The other side is actually green.

Mosaics, storks, and brothels—this ancient city has it all.

Morocco's largest Jewish cemetery.

The oldest known university in the world is in Fez, Morocco.

Brussels' favorite peeing boy has a sister.

Meet the bronze beloved pet to a family of famous peeing statues.

Cozy basement bar sports an inventory of over 2,000 beers.

An ancient knight and a symbol of the city's freedom.

The beautiful baroque library of the Hapsburg empire.

A 131-year-old wunderkammer of Texas history.

An ivy-covered arch bridge dedicated to Tejano music singer and legend Rosita Fernandez.

The castle where Martin Luther secretly translated the New Testament from Greek to German while in hiding.

Nestled on the banks of a river in Nuremberg is a small museum that was once home of the city's official executioner.

This lurid German fountain plots the sad course of marriage from dating to death.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

Tour the sci-fi-esque reality of governmental disease management.

Every equinox this Maya pyramid puts on a spooky ancient light show.

Scattered around Atlanta are little doors with big charm.

The ruins of a cotton mill that was burned in the Civil War are still hidden in a Georgia forest.

Rediscovered after a century, the father of the American Navy was reinterred in something dredged up from Davy Jones' Locker.