Since it formed millions of years ago, this cave system has been a sacred burial ground, a Prohibition-era speakeasy, and the center of an amusement park.

One of almost 200 confirmed impact craters in the entire world, untouched for tens of millions of years.

148 feet long and in the middle of a verdant forest.

This natural wonder drops 16 stories straight down through rare flora and streaming waterfalls.

One person's lost luggage is another person's treasure.

A swamp and garden tour featuring local wildlife and exotic botanical specimens from around the world.

Legend says a primate-like cryptid prowls this otherworldy sliver of the Louisiana bayou.

This float factory takes the mask off of Mardi Gras and lets visitors see where the magic happens.

This knobby, drooping New Orleans oak is a favorite place both for climbing and for meeting giraffes.

A town honors its legacy of traditional American Indian pipe carving with one gigantic pipe.

Where you can photograph wild black bears without worrying about becoming dinner.

Dakota legend claims this locally iconic pinnacle was once part of a sacred burial site that was cleaved in two.

America's largest viking stands in a Minnesota city that believes it was visited by the ancient nords.

Minnesota's highest point is a scenic vista marked by a plaque and armies of mosquitoes.

These crudely shaped folk giants may be the the second most photographed statues in the U.S.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

This massive roadside mascot was the first version of the giant to illustrate his butt.

When waves crash onto this section of beach, the rocks sing a song.

A remnant of the last Ice Age, this lake is surrounded by fascinating rock formations.

The menacing creature had a tremendous influence on the local culture before being exposed as a hoax.

A lovely hidden waterfall right off the highway is well worth a stop.

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

Old car parts and assorted materials get turned into one man's mechanical treasures on the side streets of Cleveland.

Bison, America's national mammal, are staging a slow comeback in Ohio's prairie parkland.