A narrow ghost town built onto a peninsula behind a Colombian Slum.

An ancient city hidden in the heart of the Sierra Nevada mountains.

This elegant Colombian fortress was one of the torture headquarters for the Spanish Inquisition.

A cozy bookstore and coffee shop in the heart of Cartagena's Old City.

The colonial city's social history is reflected in its fanciful door knockers.

An unusual and beautiful form of mass transit serves the city's steepest neighborhoods.

Outdoor escalators and art have helped change what was once a notoriously dangerous part of Medellín.

The religious shrine that Pablo Escobar's men would allegedly visit before completing a mission.

The (usually) serene burial place of the world's most notorious drug lord.

The Andean town where every single building is decorated with a brightly colored frieze.

Ripped apart by a bomb in 1993, the shell of Pablo Escobar's infamous vacation house still stands.

A 10 million-ton rock once worshiped by the Tahamies Indians, accessed by an astounding staircase.

This narrow street is packed with street vendors and bars selling chicha.

This museum contains a vast array of puppets and marionettes from all over the world, featuring incredible works by Portuguese creators.

Catering to broken dolls for almost 200 years, this repair shop is now a charnel house of doll parts.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

Ring the bell to enter a bar that looks equal parts museum and old curiosity shop.

Numerous impressive carvings are embedded in the trees lining this street in Marrakech.

North Africa's first museum of its kind preserves the culture of Moroccan women and their artistic achievements. 

It took 40 years to build this Eden-like garden in Marrakech, later restored by Yves Saint-Laurent.

A line number in Amsterdam that will likely never be used again due to its tragic history.

A unique work of automotive art calls this shopping center home.

Some 80,000 Delft Blue tiles line the inside of this Amsterdam walkway.