This network of narrow, medieval passages has the most delightful name.

A traditional American farmhouse plopped in the middle of a Piccadilly courtyard.

London's first edible insect farm offers facility tours and cooking classes.

Putting the "mod" in "modular" since 2000.

The Art Deco artwork depicts gilded carriers of deadly illnesses.

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

The first tunnel to be dug beneath a river, repurposed as an art and museum space.

William Blake claimed to have painted this gothic masterpiece after encountering this nightmarish being in a vision.

Ship-sized kinetic sculptural fantasy.

A musical composition 1000 years in length plays at the Trinity Buoy Wharf in London.

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

Dictionary Johnson’s favorite feline.

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

Following the trail of an old metro line, this scenic path is haunted by a creepy spriggan statue.

Repository for more than 22 million pickled specimens.

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

This 1920s Dutch barge is now a floating bookstore.

This wildly-tiled artist's palace is a living and growing account of the creator's life, loves, and labors.

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

Wedged between two buildings at the Great Ormond Street Hospital is this secret music installation.

A tongue-in-cheek arcade where the games are based on everyday life.

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

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

A kaleidoscopic warehouse-maze of handmade neon signs.