Three hundred illuminated pillars form an “artificial forest” in Medellín.

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

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

The world's tallest palm trees look like the whimsical kind of plant you'd find in a Dr. Seuss story.

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

Unparalleled stargazing, one of Colombia's best observatories, and a swimming pool can all be found in the middle of this ancient tropical forest.

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

Source for a sizable portion of Egypt's freshwater supply is more than an optical illusion.

Some believe that this ancient mural depicts technology far ahead of its time, but in reality it's nothing quite out of place.

This unassuming tree stump reportedly traces its roots to the famous pharaoh queen's reign.

One of the most well-preserved temples of ancient Egypt.

The medieval center of the Islamic world was also once the seat of Saladin's sultanate.

Standing atop 2nd-century Roman ruins, this church is one of the oldest and most iconic in Old Cairo.

Charnel house at the foot of Mount Sinai.

Ancient Egyptian relief, claimed to depict an electrical light.

One of its engravings is believed to be among the first representations of medical and surgical instruments.

Egyptian treasure trove of fossils documenting the whale's transition from land mammal to sea creature.

Known as the Sistine Chapel of Egypt, this tomb houses some of the most well-preserved paintings in Egypt.

This ancient structure is widely thought to be the oldest intact pyramid in the world.

These Egyptian statues have survived for 3,400 years and were an acoustic wonder of the ancient world.

Ozymandias’ time-keeping temple.

Silver in the hills led to the speedy creation of this boom town and a lack of it saw the town abandoned nearly as quickly.

The bullet-riddled wall from the St. Valentine's Day Massacre, bloodstains enhanced for your viewing pleasure.

The second-largest gold nugget in existence, displayed in a Las Vegas casino conveniently named the Golden Nugget.