A former copper mine which became a truly unsuccessful prison.

With some 500,000 books across five buildings, this bookstore is a reader's paradise.

The ruins of an abandoned 18th-century town that is slowly being reclaimed by the forest.

The kind of mixed-up place that drives archaeologists crazy.

Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

Ruins of a historic medical facility sits eerily by the water.

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

A miniature village lies nearly forgotten in the forest by the side of a major highway.

Yale University's home for rare works, including the mysterious Voynich Manuscript.

This small-town Connecticut restaurant gives each diner a free book from its vast library.

The poet Walt Whitman was a frequent visitor to this spot, the highest on Long Island.

A collection of playbills, photographs, and other memorabilia from the Brooklyn Academy of Music.

These conical kilns measure an impressive 30 feet in diameter, and were once used to produce charcoal for a local blast furnace.

Where the Millerites gathered to watch the end of the world in 1844—and left disappointed.

Supremely flaky treats await at Amadou Ly’s boulangerie and patisserie.

The highest natural point in New York City and all of the Atlantic coastal plain.

A waterway covered over after the Industrial Revolution has been unearthed and cleaned up, for the enjoyment of fish and humans alike.

This former water source for the City of Brooklyn is now a thriving natural wetland.

Dine on old-school red sauce fare at a former mob hang out and film set for The Sopranos.

Cooks at this tiny takeout spot grind their rice flour in a stone mill each morning for perfect cheung fun.

All of the Malaysian sweets at this shop are made daily with a whole lot of love.

Now owned by the National Park Service, this location was once home to illegal boxing matches.

Built in the 1920s, this co-op in the Bronx feels more like an Italian villa than a typical New York apartment building.

Staten Island's original central park is the former home of the city water supply as well as thousands of immigrant graves.