A sharp bend in a dramatic river canyon cut through red rocks.

Most-visited and most-photographed slot canyon in the American Southwest.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

This stunning mass of ice spans 121 square miles and is still growing.

1,001 carved statues of the Buddhist God of Mercy, each with a unique face.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

Few other hotels can rival the grandeur of the Castle in the Rockies.

A surviving remnant of the thick ice mass that once mantled most of Western Canada's mountains.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

A brush maker used his factory to protect blind Jews from the Gestapo.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

A battle between nature and architecture in the Cambodian jungle.

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

The former Nazi Germany concentration camp stands as a museum to remember this dark chapter in European history.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

Yo, Adrian!

The prototype for all Nazi concentration camps.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Baroque celebration of the end of the Great Plague of Vienna.