Andy Griffith's hometown has made itself up to look like the fictional town of Mayberry.

Step back in time while shopping inside this local store.

An Iowa town celebrates its heritage with the tallest working Dutch windmill in North America.

This long unused shot tower on the Mississippi remains a point of pride for a small city in Iowa.

Natural catch-basin rocks covered in thousands of drawings spanning many millennia.

At a mile long, the Fort Madison Bridge is the largest double-decker swing-span bridge in the world.

Hell on Earth is actually a small town in Michigan where anyone can be mayor for a day.

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

The world's longest known cave system.

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

The park is home to the United States's only still-operating Dutch windmill.

The only surviving prototype for Buckminster Fuller's house of the future.

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

This national park on the shore of Lake Michigan features remarkable dunes that lie at the heart of a Chippewa legend.

A jaw-dropping brutalist space church seems to have crash-landed in the middle of America.

After four years of grasshopper plagues, this chapel was erected as a plea to God to make them end.

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

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

Spectacular views await visitors to this lake.

The oldest badlands in North America, Makoshika State Park takes it name from the Lakota words for broken land.

The only road through the heart of Glacier National Park.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.