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

This Torino museum honors a soldier who kept the city safe using barrels of exploding gunpowder, losing his life in the process.

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

Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

There must be a pun in this haystack somewhere...

This exemplar of modernist architecture is meant to captivate and inspire students of the Cooper Union.

A small peaceful park and waterfall tucked amid the urban grind of Midtown Manhattan.

A popular European tradition makes its way to the states on one of America's most famous bridges.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

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

The celebrated eyesore created by starry-eyed sweethearts.

Vaucanson's most famous automaton, brought back to life.

France's high-tech, future-themed amusement park.

A colorful piece of contemporary art cheerfully clashes with Lyon's historical architecture.

One of the largest ochre quarries in the world, hidden in a limestone landscape.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

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

The world's most famous cheese caves.

A medieval church with largest and oldest collection of Renaissance frescoes in France.

This submersible road connecting a French island to the mainland is lined with safety towers for when the tide strands travelers.

The spiral staircase hidden inside this giant Parisian column was likely built for Catherine de Medici's astrologer.

Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

135 bronze medallions mark a French meridian line which once rivaled the hotshot Greenwich timeline.