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

This Swedish astronomical clock was in storage for almost a century before its glorious workings were put on display once more.

These crypt figures are said to be the giant and his family, turned to stone mid-rampage

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

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

Go surfing on this urban wave, "hacked" by local surfers.

The largest madrasa in Morocco once housed more than 900 students within its exquisite walls.

The oldest monument in Marrakesh and the city's only surviving example of Almoravid architecture.

One of the two original gateways into the Kasbah, this gateway is a nesting site for storks.

Deliberately hidden for centuries, the magnificent Saadian Tombs were eventually uncovered in 1917.

This vast masterpiece of Moroccan architecture spreads across 20 acres.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

This World War II bunker now survives as a documentation of the Nazi regime and war crimes.

Beneath Kraków Old Town's main square lies a hologram-filled medieval market vampire graveyard wonderland.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

This grubby wall is said to be one of the Earth's esoteric energy centers.

These steps offer a breathtaking view of one of Europe's most besieged fortresses.

An Albanian monument to the Communism that nearly crushed the country is now a crumbling wreck.

A scenic UNESCO site that doubles as a habitat for various forms of wildlife.

This historic black and white monastery is one of Bulgaria's architectural jewels.

This ancient structure appears Roman, but was constructed during the 16th century and was utilized until 1911.

The partially submerged ruins of a white marble quarry used in ancient Greece for over 1,200 years.

A marvel of Byzantine engineering under the streets of Istanbul.

A small etching on the white marble parapet was written in runic script by a Viking mercenary.