Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

A six-ton wedding present for the King of the Scots.

The most loyal of little dogs, or a Victorian era publicity stunt?

A 18th century graveyard and its astonishing cortege of macabre iconography.

Temples adorned with intricate, erotic sculptures make up one of the "seven wonders" of India.

The 953 windows undoubtedly make this the world's most beautiful screened porch.

From Tintin to the Smurfs, Europe's greatest graphic icons are celebrated in a grand Art Noveau gallery.

Christ's blood allegedly preserved in a Belgian town.

The famous winding walk at Chartres is surrounded in mystery and myth.

Religious dwelling in a Spanish volcano.

An awe-inspiring mosque in Morocco with one of the tallest minarets in the world.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

The final resting place of soldiers' loyal canine companions.

Moscow's imposing monument to the Space Age.

World's largest bell sits on the grounds of the Kremlin in Moscow.

This bridge was constructed from the rubble of the infamous Bastille.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

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

Site of a classic 19th-century physics experiment to prove the earth is rotating.

The final resting place of the great navigator, or maybe his brother.

Jesus' footprints and the first catacombs in the world.

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