Hear the quietest sound from across the dome.

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

The world's first underground farm is in a World War II bomb shelter beneath the streets of London.

Several plaster noses are hidden in plain sight around London's Soho neighborhood.

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

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

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

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

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

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

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

This South London cemetery holds the remains of more than 15,000 people.

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

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

Once a year, a sandbar rises from the depths just in time for the world's weirdest match.

The now-quiet remains of coastal artillery defenses that were used in both World Wars.

This lighthouse was crafted as penitence for the theft of wine bound for a monastery.

The UK's oldest theme park slowly slips away.

This floating cinema brings new meaning to the phrase "going out" to the movies.

This Khmer-era temple includes a lintel that was stolen and displayed at the Art Institute of Chicago for years before returning to Thailand.

A dazzling temple featuring a towering 12-meter golden Buddha.

Bizarre Hindu and Buddhist sculpture park.