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

Astronomical observatory above Lake Titicaca.

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

A valley of unique erosion patterns lends to a view like nothing on Earth.

Popular tourist destination where witches in dark hats sell dried llama fetuses for good luck.

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

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

This beautiful and unmissable little museum is full of fascinating artifacts from Mesoamerica's great civilizations.

An incredible collection of Mesoamerican art assembled by one of Mexico's great artists.

Climb a steep hill in 90 seconds on the second-oldest urban subway in the world.

Legend says if you stick your thumb in the hole and it gets wet your wish will be granted.

A marvel of Byzantine engineering under the streets of Istanbul.

An iconic and controversial ancient Iberian funerary urn with a hauntingly penetrating gaze.

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

Touching this little fossil embedded in the wall of a grand mosque-cathedral may make your wishes come true.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

The former home of Norway's greatest romantic composer.

St George's Leprosy Museum depicts the gruesome afflictions of those suffering from the disease.

The painter of "The Scream" is laid to rest under a stoic bust of himself in the humble corner of an Oslo cemetery.

A favorite with sightseers, this Norwegian funicular provides easy access to a stunning view of Bergen and its environs.

A thin pane of glass keeps visitors from sliding off this futuristic skywalk.

The burning of this 12th-century church kicked off a campaign of Norwegian Black Metal terror.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."