The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

The yawning maw of this pagan visage is said to bite off the hands of liars.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

Travelers who fall victim to this mermaid's charms are destined to stay in Užupis forever.

Legend has it that Napoleon Bonaparte fell in love with this Gothic church.

A striking symbol of the Bulgarian capital.

Portugal's National Pantheon has a history of curses, collapses and financial problems.

The sacred shrine of the Yazidis.

This beautiful arched gate is all that remains of the fortress the ancient mountaintop town of Amadiya once was.

An ancient fortified mound raised over the millennia from settlements built one on top of the other.

This downtown Dallas art installation is always on the lookout.

A modern, secular take on a traditional Virgin Mary motif.

Swedish skyscraper with a 90° twist.

Where the lovelorn find a home for their sentimental keepsakes.

This scale model of our solar system hid in plain sight for years before a physics team sought out all the planets.

Home to Alan Turing, the cracking of the Enigma code, and Captain Ridley's shooting party.

Elaborate tile work in this railway station tells the story of Portugal.

The world's oldest bookshop still in operation.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

The medieval castle built as headquarters for the Pope's secretive Knights Templar.

The footprint of a frustrated devil in Munich's Cathedral.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.