The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

Berkeley Hot Springs presents to you "the only outdoor monument to presidential bathing."

The Pentagon sits on a former island that was in Virginia at low tide and D.C. at high tide.

The final resting place of an unidentified revolutionary soldier sits behind a Virginia church.

The romance of early commercial flight still fills this Art Deco destination.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

The tomb was guarded by soldiers from both sides of the war, and some left their initials carved in the brick.

The taxidermy remains of the most popular pony in children's literature.

Soldiers were buried next to Lee's house in the center of Arlington Cemetery to dissuade the general from reclaiming his property after the war.

The graveyard holding the remains of George Washington's slaves was forgotten for nearly 200 years.

This stately building in Alexandria, Virginia was built by Freemasons to honor one of their most famous members.

This colonial tavern played host to George Washington, Thomas Jefferson, and other famous early Americans.

The narrowest house in America is seven feet of pure spite.

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

This popular tourist cave was ignored for almost 200 years before being mined into an attraction.

Once a strategically imperative naval base, portions of this Bermuda dock complex now serve cruise ships.

This half-ton piece of the Alps sits at the base of the CN Tower.

This impressive working clock made of 16,000 plants changes its flowers twice a year.

This seemingly cursed monument is dedicated to one of Canada's great war heroes.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

Soaring over the Niagara Whirlpool since 1916.

A swaggering, monumental souvenir of the most extravagant party Montreal’s ever thrown.