This tea house was a hand-built gift from Boulder's sister city in Tajikstan.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

A small island with no monkeys but plenty of military ruins.

A tunnel once abandoned now thrives with graffiti art as an off-limits makeshift gallery.

Figures of unknown origin carved into the surfaces of underground caves.

This zombie-themed restaurant stands out in the heart of corn country.

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

This abandoned radar station from the Cold War era now only broadcasts a seriously ominous air of isolation.

A modest reminder of treacherous waters at the Golden Gate.

A 300-ship graveyard, with a few still visible at low tide.

A store that sells all manner of bones, insects, and animal curiosities.

An alchemist's "magic door" stands in the middle of a Roman park.

A face emerges from the landscape when seen from the air.

Mozart's skull may be held in this collection, but definitive proof continues to elude scientists.

A museum devoted to bringing to light forgotten or neglected histories through exhibitions, education and public programming.

The former hotel where Tesla invented the radio.

Commemorating the spot where the famous scientist fed his pigeons.

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.

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

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

An unrealized dream to wirelessly electrify the entire Earth.

A museum dedicated to "science, history and the arts" little changed since 1915.

Dive bar built out of the remains of a whaling ship.