A beautiful Gilded Age hotel in the White Mountains with surprising diplomatic history.

This cabin survived a landslide that killed its owners.

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

This national landmark is also home to a massive treehouse.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

Over 100 concrete munitions bunkers are all that remain of a Pennsylvanian village seized by the US government.

An underground blaze turned this village into a ghost town.

The only geyser in the state of Pennsylvania is caused by pressure from an abandoned coal mine outside of the ghost town Centralia.

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.

Construction uncovered this trove of fossils, which visitors are welcome to add to their own collections.

The highest point in the state of New Hampshire, and while unlikely "the worst weather in the world," it sure seems that way to hikers.

Turns out you can see the world without ever leaving Maine.

The land is home to swimming ponies and a legendary 18th-century treasure.

An isolated island home to one of the oldest English-speaking communities in the region and Maryland's state dessert.

When the Austin Dam failed it destroyed much of Austin...and then it failed again.

This lush forest valley was once mined for lumber to the extent that it was once nicknamed "The Pennsylvania Desert."

A planned settlement in Pennsylvania once housed the aristocratic refugees of the French Revolution.

Since the 1930s, this Pennsylvania town has celebrated the humble tomato.

Abandoned blast furnaces are an enduring reminder of Scranton's once booming iron business.

The train collection of an eccentric New England seafood mogul is now a National Historical Site.

Grand architectural relics gain a new life in this Pennsylvania warehouse.

A museum dedicated to the history of electric interurban transit near the home of the first electric trolley system in the United States.

Board a mine car and descend the #190 slope 300 feet underground into the Clark Vein of coal.

Three gardens with toilets and urinals filled with bright flowers started as a protest against zoning rules.