Once the future of underwater combat, this old sub is now open for visitors to muck around in.

Maine's oldest diner also happens to win acclaim for its elevated comfort food.

The first bridge observation tower in the U.S. offers one of the best views of Maine.

This candy-striped tower is the farthest east you can go in the United States.

A roadside park in eastern Maine first marked the halfway point between the equator and North Pole with a brass pin in 1896.

This collection of Wild West movie memorabilia also claims to hold some secrets of the Lost Dutchman's mine.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

George Washington, Alexander Hamilton, and Benjamin Franklin all slept at this humble inn.

The "Father of Arizona" tried to build a Zoroastrian fire temple on the hill where he's now buried.

No one knows the origin of this small town’s unique name.

It might not be as impossible to reach as its name would imply, but just about.

The “Grand Canyon of Maine” is a three-mile gorge full of striking geological features.

The debris forms a solemn memorial to those who died in a 1963 accident.

The highest point in Maine is a grand gift to the state citizens that also happens to be one end of the Appalachian Trail.

A small park commemorates the departure of the first-ever successful transatlantic balloon voyage.

A monument marks the beginning of the longest north-south road in the United States.

Steam engines and conveyor belts are remnants of a genius system left in the middle of the Maine woods.

An unrecognized nation-state created in the 1820s to avoid taxes.

A mere dot on the map in the great north woods is the first place in America to vote in Presidential elections.

A gardener's enduring labor of love is spread throughout a small Vermont town.

This sandstone gorge in New York State's Adirondack Mountains is home to waterfalls, flumes, and more.

Secluded amid upstate New York’s Adirondack Mountains lies this subterranean emblem of a nation on the brink of nuclear war. And it's for sale.

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

Located on the banks of the St. Lawrence River, this mansion is home to a massive art collection.