This lake’s emerald green waters are a spectacular sight, but it’s not a great place for a swim.

In La Paz's huge, city-sized cemetery, the deceased are stored in rows of apartment-like buildings.

Mysterious Incan ruins on a tiny island in Lake Titicaca.

A desert that evokes the surreal.

Astronomical observatory above Lake Titicaca.

Bolivia's needle-like rock formations.

This red lake 4,000 meters above sea level is home to rare flamingos.

On the outskirts of a desert trading village high on the Andean plain, steel giants have been destroyed by salt winds.

A seemingly endless landscape of pure salt stretches far across Bolivia.

Since 1874, this macabre collection has developed into a museum devoted to Scotland Yard's mementos of dastardly deeds.

This East End pub gained notoriety as the site where gangster Ronnie Kray publicly shot a rival.

This London marker celebrates the spot where the world-famous English band was founded.

This medieval church tower has maintained its clockworks since the 16th century.

The Art Deco artwork depicts gilded carriers of deadly illnesses.

This knockout museum lies in a sleepy corner of London.

The collection contains over 25,000 items and details the painful dental practices of the past.

One of the few remaining examples of 19th-century London’s attempt to clean up its reputation.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

Where condemned pirates met their grisly end at the gallows on the River Thames.

This elaborate Byzantine-style building was designed for a not-so-pretty purpose.

The remains of an ancient Roman teenager are memorialized at the base of a modern London landmark.

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

A glorious pub known for a spiteful printing feud and its famous typeface lost—then found—at the bottom of the Thames.

The pioneer of psychoanalysis spent the final year of his life here, still seeing patients on that famous couch.