The hallucinogenic center of the ancient world.

A Turkish ghost town abandoned in a population exchange with Greece.

These tombs were built into the side of a mountain so that ancient angels could reach the dead.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

Along the edge of this fountain are 365 smaller fountains that represent the days of the year.

Baroque celebration of the end of the Great Plague of Vienna.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

A celebration of capitalism in Midtown.

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

A symbol of Texas pride.

Housed in a century-old building, this museum's dedicated not just to soft drinks, but to the free enterprise system.

Public art now takes pride of place on the site of one of County Durham's last deep coal mines.

Locals affectionately dubbed this World War I memorial "Tommy."

One of three sites in England that house the National Collection of Arms and Armour.

Harry Potter once visited this massive limestone cliff, which was carved by an ancient glacial river.

A long, winding trek rewards you with a gorge so captivating it inspired a painting in the Tate.

This incredible viaduct was part of the Victorian railway boom and helped the Midland Railway navigate tough terrain.

This amazing trail among the many waterfalls around Ingleton has been enchanting visitors since 1885.

This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

This collection of ancient structures makes up part of the largest group of prehistoric earthworks in Britain.

One of the oldest and certainly best preserved Cistercian abbeys still in existence.

Reputedly based on the tomb of Jesus Christ, this crypt is the oldest surviving structure of any cathedral in England.

The remains of a Dominican friary, once one of the largest of its kind in the United Kingdom.

The largest timber structure in Europe.