This Georgian architectural masterpiece is the only cloth hall left in Britain.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

Modern commuters still pass through this 2,000-year-old Roman archway.

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

Be on the lookout for the symbolic insect all over the city.

The oldest housing complex in Riga is a mini timeline of architectural trends.

An impromptu shrine appeared shortly after beloved "Torchwood" character Ianto Jones was killed off the show.

Recently restored menagerie of Victorian-era beasts.

This ancient burial site is believed to be one of the first earthquake-protected structures in the world.

Named after a legendary garden called Eram in southern Arabia, built by order of Shaddad, an Arab king who wanted to compete with Paradise.

The ancient necropolis houses the immense rock-cut tombs of four Persian kings.

The palace of the King of Kings, burned by Alexander the Great.

Mirrors and glass shards cover every inch of this arrestingly beautiful mosque.

Visitors dating back to the 1600s carved their marks in the stones of the iconic tower.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

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

A statue honors the children who fought Nazis in Poland.

Icelandic folklore says this giant boulder was ripped from the mountains and placed at its current location, where it became home to elves.

A restaurant devoted to "trouser grip" wrestling, an ancient form of Viking wrestling that is Iceland's national sport.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

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

This simple roadside art installation ended up sparking a folk art movement and a controversy of international proportions.

Ancient burial grounds of the wealthy.