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

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

The ancient past meets the retro-future at these dinosaur tracks that are protected by a geodesic dome.

While many places make the claim, the Library of Congress says this restaurant is the birthplace of the hamburger.

Former abode of notable poet, complete with literary references and stories of ghosts.

This narrow canyon has been carved by the river over thousands of years into spectacular and curious forms.

This 150 foot seven-tiered cascading waterfall is one of the hidden gems of the White Mountains.

The house where Rudyard Kipling wrote the Jungle Book is also the location of the first tennis court in Vermont.

A tiny plaque marks the location of the water source that facilitated the birth of modern-day Boston.

This headstone marks the grave of an 11-year-old boy killed during clashes in the streets over the boycotting of British goods.

One woman’s obsession gave birth to this lovely oddity at the Boston Public Library.

Painstakingly built dioramas sit unnoticed in a Boston office building.

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

The oldest Italian café in Boston, this spot also serves as a veritable museum of vintage coffee ephemera.

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

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

Become a prohibition rebel.

New York City's smallest piece of private property.

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

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

New York's oldest magic store.