Go inside to really appreciate this 500-year-old technological masterpiece.

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

Famously misunderstood wonder of the ancient world

Nicknamed Kazakhstan's Grand Canyon, this natural wonder lies east of Almaty near the Chinese border.

Submerged trees jut ghost-like out of an idyllic turquoise mountain lake.

These limestone cliffs are associated with the Greek myth of Prometheus.

One of the most well-preserved mammoth specimens in the world.

Perhaps the tiniest sculpture in Saint Petersburg is a little bronze finch inspired by a song.

This massive monument honors the first human in space.

A 360 degree battlefield experience.

Stalinist skyscraper built with help of cryotechnology.

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

Moscow's imposing monument to the Space Age.

Moscow's most popular cemetery includes the graves of numerous cosmonauts.

Moscow's other, lesser known kremlin is a fairytale-like cultural complex modeled after Old Russia.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.