Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

New York City's only preserved family home from the 19th century.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

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

The Tudor-style cottage in the middle of the square is not quite what it seems.

The library houses an incredible collection of some of the world's most impressive books and manuscripts.

Museum dedicated to the UK's first charity for abandoned children, with keepsakes of the mothers who left them behind.

A mysterious pair of mice eating a piece of cheese is London's smallest public sculpture.

Mary Kelly was last seen here before she was murdered by Jack the Ripper.

The site of London's first coffee house has been serving refreshments of one kind or another for 360 years.

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

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

The site of the climactic scene from the classic horror film is now a historic landmark.

The ghostly remains of an accidental sea.

A wall of chewing gum moonlights as collective art.

A museum dedicated to the history and exploration of both popular music and science fiction.

A walk through the historic city center, under the streets of Seattle.

The national park was once a plantation estate.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

A wondrous old library overlooking the nation's capital.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

The United States Capitol's former columns still stand.

The official atomic museum of the United States explores the explosive and productive history of a much maligned energy source.