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

This groundbreaking 16th-century map is known as "America's birth certificate."

One of the three perfect vellum copies of this historic book known to exist is on display in a specially-designed case.

This unique museum cafeteria showcases the history and regional diversity of African American cuisine.

The only Leonardo Da Vinci painting in the Western Hemisphere.

A muscular Art Deco monument represents the struggle between regulators and unbridled markets.

Look closely and you’ll notice that the color changes a third of the way up the tower.

The preserved home of the first settler of "the most German town in Brazil."

This historic, palatial theater is now one of the world’s most beautiful bookstores.

Prehistoric history as seen through the lens of an outsider artist.

A small etching on the white marble parapet was written in runic script by a Viking mercenary.

An old slave lookout in Cuba's historic sugar cane fields.

This monumental work of art symbolizes the coming together of a previously divided city.

Two identical statues by Fernando Botero, one blown to pieces in a terrorist bombing, the other donated as a gift for peace.

This 16th-century monastery was founded to cloister the daughters of wealthy local families.

This mysterious chalk figure of a horse has been recreated and restored for more than a century.

The final resting place of the liberator of Argentina is guarded around the clock by two soldiers.

Strange rumors surround the artist who created these solemn metal guard dogs.

This necropolis is home to eclectic funerary art and is the final resting place for much of the city's nobility.

This kilometer-long university building is an unexpected architectural delight.

This ancient Egyptian obelisk still bears the wounds of World War I.

The most southern point you can drive to in the Western Hemisphere.

This giant geoglyph of mysterious origins is now the site of neo-pagan rituals.

England's most notorious suicide spot.