This Brooklyn curiosity shop has its own magic theater and a singing mechanical bird that sparked an online feud with Kelly Clarkson.

New York's oldest magic store.

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

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

A Victorian cemetery in the heart of Brooklyn remains a popular mecca of morbid curiosity.

This subterranean oyster house has been the pearl of Grand Central Station since 1913.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

Perhaps the most storied New York City eatery, Delmonico’s reshaped American restaurants.

Behind a bodega is a small museum of relics and ephemera showcasing the history of New York.

An unconventional space for art and science housed in a massive old warehouse.

The famous author's cottage hideaway.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

Beneath its placid surface, one of New York City's primary sources of drinking water hides a haunted past.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

Eat the ultimate iteration of Portugal's most beloved pastry.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

Royals, rebels, and artists have all conversed at this grand 19th-century Viennese coffee house.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the first ‘Harry Potter’ film.

Budapest's Communist-era statues, banished to the suburbs.

Some of the greatest minds in the history of Hungarian art and science converged in this café.

Rejoice at Amsterdam's ‘pop temple,’ a former church reborn as a raucous music venue.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.