Niagara Falls holds a special place in Nikola Tesla's history, so they put a statue on it.

Humble beginnings for one of the world's most famous scientists.

One of many reminders of Tesla's scientific contributions overlooks the falls which inspired him.

The former hotel where Tesla invented the radio.

Nikola Tesla's ashes are held in a golden sphere, surrounded by his works.

An unrealized dream to wirelessly electrify the entire Earth.

One of the last few places in Manhattan that employed a pneumatic systemic keeps it on display.

Below a historic English market town lies a secret underground city complete with kitchens, laundries, storerooms, and an underground lake.

Museum houses an impressive display of the origin and artistry from the now-quaint invention's history.

A youth-centric science center hides an industrial triumph.

A surreal museum of extraordinary industrial objects.

Relive a Polish uprising via an enormous, century-old cyclorama.

Enter the cabin of a life-sized Hindenburg replica.

Museum on French naval history, with magnificent figureheads, a historic diving suit, and a boat used by Napoleon.

Current docking place of the SS United States, the fastest transatlantic ocean liner.

This working replica of the 'Friends' coffee shop is more accurate to the show than the set itself.

Enormous statue of the Emperor of the Mongols.

Five mile wide circular ring of rock in the Russian Far East is a curious geological oddity.

A remote forest of stone pillars along the Lena river.

Site of the largest impact event to occur over land in Earth's recorded history.

Formerly Yugoslavia's "forbidden island," this sleepy little city still holds the abandoned remains of military strongholds.

This Nazi-built amphitheater was constructed on a sacred mountain site used by various German cults.

This unique Renaissance castle was turned into a home for Nazi occultism.

Abandoned Nazi train station turned underground astroparticle laboratory.