The only Civil War battle in Washington D.C. took place near this highest natural point in the city.

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

The United States Capitol's former columns still stand.

Legend says that these tall basalt pillars are the petrified wives of a trickster god.

This famous bridge twisted itself into oblivion, but not for the reason you might think.

Statue of Lenin, from Cold War era Czechoslovakia, now in a neighborhood of Seattle.

This scenic gorge is named after one of the most famous Bigfoot attacks in pseudohistory.

The second tallest railway trestle bridge in America.

An obscure waterfall that looks like something out of a fantasy novel.

Rustic natural hot springs in the deciduous rain forest.

America's second-oldest brick baseball stadium was home to a legendary WWII series that only sailors got to see.

This pre-Revolutionary War grist mill ground corn and flour for soldiers in seven American wars.

This once-palatial plantation may have been the site where a draft of the Declaration of Independence was written.

America's first federal monument.

The ruins of this Thomas-Jefferson-designed mansion have been left to crumble since the Christmas Day they burnt down.

A railroad tunnel that, upon its completion, was considered one of the engineering marvels of the modern world.

Parking garage where Bob Woodward met Watergate source "Deep Throat."

Nine of the very few concrete ships ever made in the U.S. are beautifully decaying off a Virginia pier.

The resting place of a Civil War celebrity's amputated limb.

A 300-yard long natural tunnel runs through a ridge deep in the Appalachian Mountains.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

The highest peak in the state of Vermont has some interesting features.