Inside this Icelandic greenhouse, geothermal energy keeps tomatoes warm and growing.

Oversized statues are just the tip of this nostalgic Americana roadside attraction.

The gravestone of the suffragist leader attracted extra visitors during the 2016 election.

Fossilized sea bottom and lime quarry.

A reliquary of pop culture marvels, including the world's largest (and most terrifying) Jack-in-the-Box.

An enormous cat made of recycled wood scraps.

Discovered by cows, these upstate New York show caves are presented with a healthy dose of psychedelic folk art.

Inspiring Herman Melville and Henry David Thoreau, Mount Greylock in western Massachusetts is the highest point in the state at 3,491 feet above sea level.

An old dining hall now serves up ghost stories for lusty locals.