The former headquarters of history's oldest megacorporation.

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

The building where Mary, Queen of Scots was said to have bathed in white wine.

Above an abandoned Underground station, this charming bookstore is home to strange antiquities and literary works.

Its collection includes a broad array of social, geographic, graphic design, and political history.

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

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

The lab where the scientist made his groundbreaking discoveries is preserved on the basement floor of the Faraday Museum.

This luxury shopping lane has been protected by its own tiny police force for over a century.

The pioneer of psychoanalysis spent the final year of his life here, still seeing patients on that famous couch.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

Hear the quietest sound from across the dome.

Catacombs turned marketplace.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

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

An unusual round church in London with a Templar past.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

The largest of London's subterranean rivers and once a mad, bad center of London life.

A defensive structure built during the Hundred Years War has remained useful in one way or another for nearly 700 years.

The first German gnome who popularized the garden decoration.

An impressive Sasquatch statue marks the spot of a fated Bigfoot encounter that changed a community.

Western New York's largest independent bookstore doubles as a historical repository of all things Niagara Falls.