The oldest colonial fortress in the Americas was once the home and later prison of Christopher Columbus.

This striking, two-toned confluence of rivers is visible from space.

Quite simply the largest tree in the world (by volume).

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

All you ever needed or wanted to know about America's favorite whiskey, but not a drop to drink.

Follow the steps, and this roadside artwork will teach you how to dance.

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

Dating back to the 1800s, two imposing buildings in Michigan have had countless transformations over the years.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

This neoclassic cathedral also houses what is believed to be the oldest clock in the Americas.

These colorful sawdust illustrations are trampled into non-existence only moments after they are finished.