This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

The "Seinfeld" diner.

A hip bar decorated with walls of golden skulls.

A dilapidated dock tells the story of Titanic's missed arrival.

Order scoops of pandan, lychee, and black sesame at this family-run institution.

Hidden in Central Park's Ramble is a troublesome cave buried just beneath the surface.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

Try not to get slimed in Tribeca.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

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

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Narrowest house in Boston.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

19th-century operating theatre in which the use of ether was first demonstrated - plus, a skeleton and a mummy!

The Boston square dedicated to the dark poet who was born nearby.

Two thousand artifacts from around the world collected by one woman who loved to travel.

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

An enormous, inside-out glass globe built in 1935.

This Boston medical museum features the skull of the famous medical case of Phineas Gage.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

The oldest surviving botanic garden in the United States.