Eighty million natural history specimens call this gargantuan museum home.

This marine reptile was discovered by one of the 19th century's greatest fossil hunters.

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

This striking arch, one of the first architectural elements constructed in Prospect Park, was recently restored to its original glory.

A beautiful collection of architectural ornaments rescued from demolished New York City buildings.

Explore the atmospheric ruins of an abandoned convent in the dense forests of Mexico's first national park.

This clock was gifted to Mexico as a show of gratitude for its long history of welcoming Arab migrants.

An island filled with hundreds of hanging, decomposing, decapitated dolls.

This ancient structure was built by a mysterious civilization that was largely destroyed by a volcanic eruption.

The singular ruins of a mysterious lost city.

At a museum of everyday objects, it is the act of collecting that is really on display.

The underground mall's skylights look like they could be part of a spaceship.

Final resting place of the immigrant who brought artificial seltzer water to America.

The painter who popularized "bulls" and "bears" as symbols for the stock market didn't get a proper headstone for over a century.

A mass grave for victims of one of the city’s worst fires.

The unassuming structure was part of a Major League Baseball stadium.

Once thought to be the fabled Holy Grail, it is now known to be an oil lamp.

Though its celestial ceiling is impressive, the true star is the vast collection of French books.

Commemorating the spot where the famous scientist fed his pigeons.

This beautiful Brooklyn monument over a crypt memorializes a grim and largely unknown story from the American Revolution.

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

A way to take your secrets to someone else's grave.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

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