Known as the Hintz House, this medieval pharmacy has been an apothecary's haven for nearly 450 years.

Black cat statues guard this temple-like Egyptian revival factory.

The geographical center of Budapest is marked with a 10-foot-tall stylized zero.

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

This bridge is the first to be made entirely from iron, but designed like it was still made of wood.

Bullet holes in the church wall are a reminder of the violence that followed the assassination of a high-ranking Nazi officer.

This short white tower is all that's left of Scotland's first permanently manned lighthouse.

Built in the 1300s, this magnificent building that hosted England's kings and queens transports you to the Middle Ages.

This tiny island is home to the world's largest colony of Northern gannets.

Follow the original medieval paths that wind through this intriguing section of the city.

This irregularly shaped sea fortress has defended not one but three different sovereign states.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

This bazaar is one of the oldest in the Arabian world.

Skyscraper powered by wind turbines attached between its towers.

This Roman statue is missing a limb from when the Venetians stole it from Constantinople during the Crusades.

An enormous steel waterfall is a nod to the substance that shaped Britain's Steel City.

The oldest housing complex in Riga is a mini timeline of architectural trends.

The bombed out remains of the old church were kept intact next to the new one, as a reminder of the futility of war.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

These Egyptian statues have survived for 3,400 years and were an acoustic wonder of the ancient world.

Belfast's namesake river still winds below the city center, hidden from sight.

This sublime architectural marvel is a rare example of an expressionist church.

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.