An opulent monument built for a duke who donated his entire fortune to the city of Geneva.

The world's largest second-hand graces a clock surrounded by constantly changing flower beds. 

This mountain trail inspired Nietzsche to complete his magnum opus.

Auguste Maïcon, a pioneer in French aviation, was born in this house in 1891.

A medieval military street hidden beneath a charming French fishing village.

The best-preserved ancient theater in the world.

This arch granting triumphal entrance into Antalya was designed to honor the emperor's visit.

The oldest giants in Catalonia are now displayed in a 14th-century Gothic church.

18th century anatomical amphitheater of the Royal College of Surgery of Barcelona.

A bookstore dedicated to the intersection of comedy and art.

Twelve sweet, nutty, life-sized statues are housed in this second-story shrine to almond paste.

One of the largest legal spray spots in Hamburg.

This grubby wall is said to be one of the Earth's esoteric energy centers.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

Inside this Krakow church, an explosion of psychedelic color.

Outside of one of Britain's most renowned social clubs, a step installed specifically for the Duke.

The "Bridge Over the Atlantic" lets you cross the waterway in mere seconds.

A grand example of 19th century Burmese teak architecture, and the most significant of Mandalay's historic buildings.

Gigantic unfinished stupa and the world's 2nd largest bell.

This Buddhist monastery once housed an image of Buddha containing a 19-carat diamond.

Visitors are treated to a stained glass kaleidoscope interior inside this work of art.

This unique architectural wonder is home to luxury apartments.

One of the most popular megalithic sites in Ireland stands as a humbler version of Stonehenge.

A stunning medieval castle owned and restored by the famed actor Jeremy Irons.