Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

Three hundred years of preserved Spanish colonial history in San Antonio.

Meet manatees face-to-face at this zoo for native species.

One of the longest water bridges in the world was built over a supposedly haunted swamp in Louisiana.

By day this New Orleans square is for pedestrians, but by night it is a kingdom of kittens.

This 45-story tall abandoned skyscraper is the third tallest building in New Orleans and Lousiana.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

Four, 18-foot-tall badminton shuttlecocks lie scattered about the lawn of a Kansas City museum.

Man-made geyser that rises to the exact height of the Gateway Arch.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Built hundreds of years ago this downtown iron barrier once protected a much despised king.

Elevated freight railway turned wildly successful urban park.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

More gold than anywhere else, ever.

A popular European tradition makes its way to the states on one of America's most famous bridges.

New York City's smallest piece of private property.

The controversial urban planner who designed Washington, D.C., was buried in Maryland, and can presently be found in Virginia.

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

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.

A little marble compass above George Washington's (empty) tomb in the Capitol marks where D.C.'s four quadrants intersect.