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

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

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

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

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

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

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

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

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

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.

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

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

These bamboo and rope bridges cross the Nam Khan River for six months every year.

American bombs, morbid memorabilia, and graphic photographs tell the story of the CIA-led “Secret War” from the Pathet Lao perspective.

This mysterious tower is said to enshrine a dormant seven-headed serpent that once protected Vientiane from destruction.

A quaint village where bomb casings from the Second Indochina War have been repurposed into mundane objects.

Villagers have recycled bomber fuel tanks from the Vietnam War and turned them into very, very strong boats.

A tangible and sobering reminder of an atrocity that took place during a secret war.

When the USA donated cement and funds to expand the airport in Laos, the Laotians built a massive monument instead.

More than 200 statues filled with cryptic symbols give this park spot an aura of horror vacui fantasy.

Thousands of effigies of Buddha watch from caves set high above a legendary river, plus whiskey.

A boat ride through utter darkness, lit only by headlamps, reveals an emerald green pool locals believe is sacred.

This tiered waterfall is so pretty it may cause visitors to cry tears of their own.