The Cambridge pub where Francis Crick announced that he and James Watson had discovered the DNA double-helix.

Local legend says Isaac Newton built this footbridge without any screws, bolts, or nails.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

Named after a lodging site that existed nearby, a bridge has existed at this location since 1455.

A working model of the entire San Francisco Bay and much of the Sacramento River Delta, complete with regular tides that change every 14 minutes.

Baroque celebration of the end of the Great Plague of Vienna.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

It houses the remains of a 17th-century version of the Titanic.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

The medieval woodcut-style artwork chronicles life in medieval London.

A mysterious shape catches the eye in this 16th-century painting.

Sculptor Antony Gormley used chaos theory and fractal growth to design his tallest creation.

The bones of two medieval royal lions were discovered at the historic fortress.

Graffiti from the 16th and 17th centuries cover the walls of this part of the Tower of London.

A measuring mishap led to these artificial stone ladies losing their stomachs.

London's marvelous wildfowl reserve along the Thames.

An architectural oddity hides in plain sight on this iconic London bridge.

Legends say that this Art Deco apartment building almost became Hitler's British headquarters.

This innovative steam machine was no doubt the most famous of the pioneer locomotives.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

The fences outside some of South London's estates are made from recycled World War II stretchers.

"We gonna rock down to Electric Avenue, and then we'll take it higher..."