Only a few pieces remain of the structure that carried people and goods across the Thames for some 600 years.

The 2,000-year-old beam is tucked within the pedestrian entrance to the old London Bridge.

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

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

A hidden treasure in London with a rich medieval history, and the resting place of many luminaries.

Of the many chalices in the running for the Holy Grail, this one in Valencia Cathedral sure looks the part.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

Down a pint of ale where the Bishop of Ely's servants slept in 1546.

Tucked inside a South Bank bar is an epic expressionist chronicle of the 20th century.

Since 1887, this old-school shop has stacked its shelves with extraordinary coffees and teas.

On a wall in linear London, a plaque hangs at the high water mark of one of the worst floods in fictional Kcymaerxthaereal times.

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

Heralded as the oldest statue in London.

Hidden beneath the streets of London is a secret subway that only carried mail.

This London plaque marks the spot where David Bowie's famous alien made his debut.

The real clothing store that inspired a fictional spy organization's front.

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

The wooden telephone box hidden away in London's Piccadilly was the original prototype of the iconic kiosk.

At the top of the hour, figures of the London department store's two co-founders emerge and bow to each other.

The London pub overlooks where the Mayflower was moored before setting sail for the New World.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

These stark white cliffs were spat up by the sea and are slowly being retaken by it.