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

The final resting place of 121 victims of the RMS Titanic, 42 of which may never be identified.

This historic cemetery stopped accepting bodies before many Canadian cities were founded.

Home of the world's smallest dinosaur footprints.

A morbid piece of memorabilia from the most famous shipwreck in current history is just one of the many poignant artifacts in this Canadian museum's collection.

The city of Halifax still bears the scars of the largest explosion prior to the atomic bomb.

This Canadian monument to the man who invented the telephone allows visitors to get up close and personal with the artifacts of his life.

A skeletal collection of former nautical mainstays.

Roadside collection of 65,000 signs.

A trading post in the North Pole where children send letters.

Near-constant high winds deform the trees on Spruce Knob, the highest point in West Virginia.

Berkeley Springs State Park boasts the nation's only monument commemorating presidential bathing.

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.

A former major munitions plant that has been converted into a sprawling art space.

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

At 207 feet, one of the world's longest continuous escalators.

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

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

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

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

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

Decades before the scandal, this staircase on the river was a literal "water gate."

A historic arena where the Beatles played their first concert in the U.S.

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