The archeological ruins of the ancient fortified city of the mysterious Teotenanca civilization.

A remnant of the original World Trade Center complex continues to serve as a commuter gateway.

The Wright Tavern is possibly the most important building in Concord Massachusetts to the American Revolution.

The quiet field that inspired one of the most famous songs of all time.

The Liverpool street made famous by the Beatles is real.

A century-old church is now a space museum with a treasure trove of Soviet space items.

This poignant tribute to the White Rose movement showcases artifacts related to the heroic anti-Nazi struggle.

The first national memorial to honor all women suffragists stands on land where suffragists were once imprisoned.

These plaques found across Warsaw commemorate the sites where executions or battles took place during the German occupation.

A short boardwalk through a swamp leads to the spot from which the Louisiana Purchase was surveyed.

A moving and macabre World War I-era painting by the great artist Otto Dix.

Dine like an American revolutionary at Colonial Williamsburg.

Take a self-guided tour through one of Colorado's most elevated mining districts.

An eccentric memorial garden to the "warrior" birds of World War I, the messenger pigeons used by the Allied forces.

This contemporary art museum is filled with other, smaller museums, which feature work from artists primarily in the Pacific Northwest.

Today this former Nazi concentration camp stands as a poignant memorial to the victims of fascism, and a warning from history.

This massive Maya archaeological site is home to the tallest man-made structure in Belize.

A ghost town in a remote corner of Oregon hosts a touching tribute to Sacagawea’s son.

A Victorian cemetery in the heart of Brooklyn remains a popular mecca of morbid curiosity.

A glamorous hotel that once accommodated French resistance fighters and concentration camp survivors.

Hidden in the forest are the remains of a former World War II chemical plant.

These cabins mark the site where our 11th president was born (probably).

A sun-filled museum featuring an ever-rotating collection of classic and exotic cars.

A poignant memorial to remember the Australian nurses who lost their lives during the Second World War.