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

The remnants of a 19th-century ironmaking complex hidden in the woods of Connecticut.

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

The headquarters of the famous Yale society.

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

This museum holds a fully-functional replica of the "Turtle," the first American submarine ever built.

British troops and Prohibition couldn’t stop this spot from becoming one of the United States' oldest continuously-run taverns.

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

A religious-themed park filled with folk art to bring biblical stories to life that fell into disrepair and now being restored.

The Connecticut village named for its subterranean thunder.

This petite park lets visitors see and touch examples of fossilized dinosaur tracks.

Hidden behind a Target are pillows of cooled lava that formed at the bottom of a deep lake in the Mesozoic Era.

A former copper mine which became a truly unsuccessful prison.

A reliquary of pop culture marvels, including the world's largest (and most terrifying) Jack-in-the-Box.

An abandoned Depression-era zoo hidden just off the highway.

Now home to hardy plants, these sand and gravel dunes once held back a massive prehistoric lake.

An iconic steel and chrome diner from the 1940s left empty for nearly 20 years is in danger of being demolished.