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

The centuries-old trees are draped with Spanish moss to make them look like wizened elders.

Colombia's biggest botanical garden contains plants from all across the country.

The enormous appendage offers spectacular views of Colombia's Huila Department.

Known as the site of 'El Dorado,' this mysterious lake is rumored to hold gold beneath its waters.

This Bogotá museum houses the world's largest collection of pre-Columbian gold relics.

Perched atop the highest hill in Cartagena, this 17th-century convent offers spectacular views of the city.

This whimsical home made entirely from clay is basically a giant piece of pottery.

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

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

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

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

This unusual hostel provides a glimpse of life in a city under siege.

This abandoned airplane hanger is said to have once been a top secret launch facility.

This ironic war memorial thumbs its nose at a campaign of inedible humanitarian aid food products.

The place where World War I began.

This top-secret nuclear bunker hidden in a Bosnian mountain has been converted to a modern art exhibition space.

A museum dedicated to the former country.

Ride in 1960s style on the private luxury train Marshal Josip Tito used to travel around Yugoslavia.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

This tiny, tranquil Senegalese island serves as a powerful symbol of the Atlantic slave trade.

This spectacular mosque houses the second-largest chandelier in the world.

On holy holidays, Israel's second president used this room atop Mount Zion as a refuge to read the Torah.

This 1939 grave of a British soldier now receives legions of unlikely visitors.