A sharp sculpture made of thousands of pieces of jagged glass.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

This legendary city has been a tourist attraction for centuries.

The hallucinogenic center of the ancient world.

Monasteries on rock pillars, once accessible only by frayed ropes.

Carved fountains poignantly placed in parks and in front of special monuments.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

Macabre astrological automaton clock dating to the late 1400s.

It's good luck to be mocked by this monkey.

Fantastic views and thousands of love locks.

Climb inside an iron crystal magnified 165 billion times its normal size.

A shining memorial to a Belgian hero is said to bring luck to anyone who touches it.

A little sculpture with a large wardrobe.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

The last bastion of Roman presence north of the Alps looms over a German town.

The people of Padua pledged to construct this church if the city was spared from destruction during World War I.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

Venice's "Island of the Mad."

Two stone columns flank the grand Venice square, but there were supposed to be three.

Those who own or stay at this 500-year-old, allegedly cursed house often meet terrible fates.

This deconsecrated church has seen many uses, from a tobacco storehouse to a cinema.

Pilgrimage site for star-crossed lovers.

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

Unable to build support structures on glaciers, the engineers for this tramway were forced to design a unique system.