This marine reptile was discovered by one of the 19th century's greatest fossil hunters.

The broken skateboards that became a poignant memorial to a murdered skater.

This beautiful deer park was built so King Charles I and his court could go hunting while escaping a deadly plague outbreak.

These ornate arches show how the course of the River Thames has changed.

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

The barrel-made lookout from Shackleton's final ship is tucked away in the crypt of one of London's oldest churches.

Black cat statues guard this temple-like Egyptian revival factory.

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

The Columbia Road Flower Market is now open every Sunday, rain or shine.

Classic game cookery takes center stage at what's widely considered London's oldest restaurant.

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

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

This beautiful Victorian ironwork masterpiece was built to keep London from smelling like poop.

This secluded walkway overlooks a magnificently wild London green space.

Abstract dinosaur models in London.

A Victorian natural history and ethnographic museum with wonderful turn-of-the-century, science-book-esque evolution displays.

A cluttered and astounding collection of antiquities and curiosities.

Hear the quietest sound from across the dome.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

This coffee shop lies hidden beneath a historic church.

The anatomical-pathological collection of a man who changed surgery.

A hands-off space for graffiti artists to hone and display their skills.

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

A vast overgrown cemetery, once known as one of London's "Magnificent Seven."