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

This shallow cave got its name from copious amount of human bones found inside.

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

This nearly 200-foot tall limestone stack offers visitors amazing views and a chance to meet Paul Bunyan and Babe the Blue Ox.

This lighthouse and shipwreck museum keep a torch burning for the memory of the SS Edmund Fitzgerald.

For more than 50 years, an iconic sign has greeted visiting “fudgies” to the Traverse City area.

Talula the swan has been welcoming visitors to Elk Rapids, Michigan, for more than four decades.

There's more contention than one might expect from cherry pie pans.

A World War II–era submarine museum where visitors can spend the night aboard.

A chilling disappearance (and rescue) of a child uncovers a geological mystery.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

The only Chicago bridgehouse open to the public contains a museum devoted to the Chicago River.

A mountain pass used by Prohibition-era bootleggers to facilitate traffic into and out of Canada from Vermont.

This historic hotel was once home to Henry David Thoreau and rumored to be haunted by ghosts of fallen soldiers from the American Revolution.

This steep slide at a kids’ playground went viral after an police officer tumbled down it.

Cape Cod’s historic beacon made famous on a potato chip bag.

This mosaic commemorates the oldest subway tunnel and station in the United States.

Half-scale model of a historic ship in the children's section of Provincetown Public Library.

This historic sculpture from the 16th century is even older than the city of Boston.

The original base for shipwreck rescues in Boston Harbor in the original Point Allerton Lifesaving Station opened in 1889.

This museum on a college campus pays tribute to the Arctic and to two explorer alumni.

Thousands of people walk over this fantastic work of art every day, but how many notice it?

A plaque outside the San Jose airport commemorates the insect's arrival to the West Coast.