Single runway interrupted by a busy road that cuts across its middle.

A tropical paradise once home to space exploration and military installations.

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

An original apothecary from 1792.

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

Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

Holding multiple historical boats and an entire 19th century village, this New England attraction is the largest maritime museum in the world.

This small-town pizzeria won the Hollywood lottery.

The US Navy's only submarine museum is also home to the world's first nuclear submarine.

Hauled from the water's depths, Henry VIII's flagship is preserved in this capsule-shaped museum.

The oldest U.S. Government building in California, and it's State Historic Landmark #1.

The oldest continuously operating church in California.

This remarkably simple jail went over a century without an escape.

The breadfruit-adorned final resting place of the infamous Captain of the HMS Bounty.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

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

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

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

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

The site of the climactic scene from the classic horror film is now a historic landmark.

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

This campus chapel is Robert E. Lee's final resting place and a topic of debate about the legacy of the Civil War.

Exact replica of the ancient monument, but much, much lighter.