Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

An homage to the pointers and retrievers that have long been a hunter's best friend.

This "tower of death" has acted as an observatory, a religious hub, and an executioner's lair.

A building facade covered with the statues of 11 giants of Tajik literature.

The world's second-tallest flagpole stands proud despite dropping rank.

Giant cauldrons overflow with Uzbekistan's favorite rice dish at this cavernous dining hall.

A boulder carved into the shape of the cosmonaut's head.

The longest-serving U.S. Secretary of State and Nobel Peace Prize winner was born in this humble cabin.

A bizarre roadside attraction and the first instance of miniature golf in the world.

Once decrepit and slated for demolition, now one of the longest pedestrian bridges in the world.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

This limestone outcropping was once a ceremonial site for ancient Native Americans.