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

This late-brutalist masterpiece everyone forgot about was originally created to get the proletariat jazzed about the arts.

Volcanic irregularity? Odd erosion? Alien eggs? Local legends compete to explain these strange orbs.

A replica of the straw hut where Vladimir Lenin lived in hiding, disguised as a hay farmer, in 1917.

This iconic Russian space museum sits on a landmark space production facility and houses the Vostok 1, the first manned spacecraft, that was also built here.

Iran's colorful terraces are a rare geological masterpiece.

Dedicated to a Bolshevik revolutionary, this museum is a true time capsule of the Soviet era.

This ancient Silk Road outpost overlooking the Wakhan Valley is miraculously still standing.

Beautiful palace stands tall over the Fergana Valley.

This gorgeous, colorful 18th-century church is part of one of Bolivia's few surviving Jesuit missions.

The soaring gondola lines form the longest aerial cable car system in the world.

Astronomical observatory above Lake Titicaca.

On the outskirts of a desert trading village high on the Andean plain, steel giants have been destroyed by salt winds.