The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.

Florida's first suspension bridge.

A dedication plaque on this Boston tunnel is a microcosm of a massive, controversy-laden construction project.

The home of possibly the least-loved U.S. president stands as a sort of unpopular Monticello.

At the birthplace of American railroading, a world-class collection of historic trains.

The largest living museum in the Northeast recreates life from the Early Republic period complete with costumed historians and reenactors.

An industrial waste tourist attraction.

A eight-foot-tall statue resides in the heart of Pennsylvania anthracite coal country.

The oldest farmer's market in America is so ancient it was approved by the King of England.

In this cemetery stands the country's first public crematorium.

An outlandish shoe shaped house built by an eccentric millionaire.

North America’s largest collection of horological devices and home to a colossal clock with a dizzying array of features.

These unique rock formations were created during the Ice Age.

On the outskirts of Pennsylvania’s capital city, a reminder of the worst accident in U.S. commercial nuclear power plant history.

Pennsylvania’s creepiest roadside attraction is a haunting example of roadside kitsch.

The largest wildlife crossing in Utah allows local fauna to safely traverse the six-lane Interstate 80 at Parleys Canyon.

This Civil War monument was designed by an eccentric architect and Gettysburg veteran.

A very big rock just plopped down in the New England woods.

One of the U.S. Forest Service's only mansions is outfitted with a dinner table for floating food.

This massive sycamore tree has been labeled as one of the largest in the state.

A local prank turned town icon.

An underground blaze turned this village into a ghost town.

This national landmark is also home to a massive treehouse.

American revolutionaries and British soldiers alike are buried here in the fourth-ever cemetery in Boston.