This natural hill rose another 130 feet from the debris and rubble added after World War II.

The United States Capitol's former columns still stand.

Isaac Newton's former home, where the famous apple tree still stands.

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

Perhaps the most scandalous statue of America's first president.

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

When it opened during the final years of the embargo, all the drinks and cigars were free.

This robust fence in front of a historic Georgetown home is likely made from hundreds of recycled Revolutionary War firearms.

The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

Rumor has it the hot dog stand was targeted by two Russian nuclear missiles.

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

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

This old-fashioned carhop restaurant gave the world the waffle cone.

This cannonball stands as a reminder of the final act of a fleeting governor amidst a revolution.

The historic bar where local ship captains, traders, and gold miners would come together to do business a century ago.

The building features one of the last remaining free-floating spiral grand staircases in the U.S.

A tiny red pebble marks what may be the quietest outdoor spot in the United States.

A modern mechanical planetary system, part of a 10,000 year clock.

A huge musical instrument played by the ocean.

This partially buried wreck is one of the most complete of its kind but is only revealed when the sea allows.

This little valley along Highway 1 is engulfed by thousands of lilies during the spring season.

These millipedes glow not out of attraction, but as a not-too-subtle warning.

This cave was hidden for thousands of years, storing the worldly goods of ancient Native Americans.

An eccentric millionaire's personal curio collection includes at least one shrunken head.