High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.

The opulent home that inspired Tintin's Marlinspike Hall and the adventures within.

Hundreds of secret cabinets built into the walls of legendary poisoner's private work room.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

This ancient theater was once the home of fierce gladiatorial battles.

An abstract monument to a symphonic composer.

The Guardian of Tallinn.

Copenhagen's celebrated theme park and gardens.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

Gargoyle head that brings good luck.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

A marvel of Byzantine engineering under the streets of Istanbul.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

This enormous sports car themed amusement park is home to the world’s fastest roller coaster.

A preposterously luxurious hotel with gold-plated iPads, Rolls Royce chauffeurs, and a staff that trains by watching "Downton Abbey."

Whitewashed mosque contains the world's largest carpet.

This bazaar is one of the oldest in the Arabian world.

The home of the artist credited with introducing the tomato to the American diet.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

Elevated freight railway turned wildly successful urban park.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

A century-old hotspot for jazz, frequented by everyone from Charlie Chaplin to Al Capone.