More than a million titles fill the labyrinthine shelves of this prestigious private library.

The first geometric self-supporting spiral stairs in Britain are a truly beautiful sight.

The cedar tree in Highgate Cemetery earned its title by accident.

The childhood home of Earth's alien chameleon is a humble Brixton flat.

This home on a quiet suburban street is completely covered with vibrant mosaics.

This museum and curiosity shop provides a glimpse into an often-overlooked past to show guests that there is beauty and wonder in the macabre.

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

A clock designed to run with perfect accuracy for 10,000 years.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

Collection dedicated to brands, packaging and advertising.

Hidden behind a wall for decades, this masonic lodge was only rediscovered during renovations.

Abstract dinosaur models in London.

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

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

This hidden green space is the city's second largest conservatory.

Remnants of a Victorian garden feature sitting in public woodland.

A little slice of Japan and its aesthetics in London's Holland Park.

Catacombs turned marketplace.

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

Rebuilt remains of a temple to Roman god Mithras.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

One part local history, 99 parts gruesome haunted house.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.