Step back in time and witness the fall of Constantinople.

This airport also offers travelers the chance to view thousands of years of Turkish history.

One of the largest museums in Ukraine remembers the story of the German-Soviet War in iconic, brutalist style.

340-foot statue built to honour the Heroes of the Soviet Union.

One of the world’s best microminiaturist, Nicolaï Siadristy displays his lifetime of tiny creations in this museum.

The deepest metro station in the world.

A quirky collection flush with information on commode culture from ancient times to modern day.

Check out engineering marvels of the past at this unintentionally retrofuturist museum.

This old KLM airplane cut into three parts was transformed into an eclectic airport gift shop.

It appears as if a man is standing behind this giant airport clock, painting the hands in real time.

A free, public museum dedicated to the fascinating science of sight.

A small token of gratitude from freezing cold journalists who were given a warm haven while covering JFK's inauguration.

A diminutive memorial marks the site of a successful assassination by a right-wing death squad in America's capital.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

Rumor has it the uncarved lump behind the three famous suffragists is reserved for the first woman president.

A muscular Art Deco monument represents the struggle between regulators and unbridled markets.

An atomic bomb-proof strongbox protects the U.S. Constitution from terrorists and thieves.

A computer bug so primitive it was an actual insect.

The monument's pointy aluminum tip has been melted down by repeated lightning strikes.

Daredevil repair workers can worm their way out the access hatch, loop ropes over the apex and rappel down the monument.

There’s a hidden military meme engraved on the World War II Memorial.

A double agent hid information for the Soviet Union beneath this bridge for more than 20 years.

In the middle of an extremely unforgiving and desolate high desert is the most secret military facility in the world.

A picture-perfect town, perfect for blowing up.