The evolution of recreational vehicles and motorhomes is on display in the “RV capital of the world."

One of the world’s largest living advertisements is made out of pine trees.

This folk art wall claims to be the world's one and only memorial to the bygone age of hippies.

An enormous natural sandstone bridge in Kentucky.

This open air cathedral invites all faiths to worship under the only roof big enough to fit them all: the sky.

A flat slab of stone perched hundreds of feet above the Gasconade River in the northern Ozark mountains.

This curious headstone is labeled simply as "The Queen."

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

The obelisk meant to mark the founding father's grave at Monticello is actually on the University of Missouri campus.

Curious cave that stays a cool 56 degrees all year long.

Today this bizarre rooftop phone booth seems like a piece of kitsch but it was once used to spot disastrous storms.

This Mediterranean castle was built for a millionaire and his giant dog.

This former Union fort commands a fine view of downtown Cape Girardeau and the Mississippi River.

This simple gravestone remembers a pig who single-hoofedly raised $19,000,000 for the Navy.

One man's unrequited love stands in a glass box forever.

A hillbilly theme park that proved so unpopular the land wouldn't even sell on eBay after it closed.