This massive and unusual rock formation near Okotoks is the world's largest known glacial erratic.

An elaborate gift from Claus Spreckels is now a piece of San Francisco history.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

This private residence was the template for one of the most beloved television homes of all time.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the first ‘Harry Potter’ film.

A naturally mummified 2,000-year-old man.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

This landmark church concealed a crypt packed with bones that was discovered thanks to the London Blitz.

This one has sailed five times as far as Sir Francis Drake's famous ship.

Eighty million natural history specimens call this gargantuan museum home.

Scattered throughout London are ancient remnants of the city's former bounding wall.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

London's smallest police station is barely the size of a phone booth.

The signs of a long buried road can still be found hidden beneath a London sewer grate.