A unique botanical garden housed in three giant geodesic domes.

What appears to be a wizard's lair in Milwaukee actually houses a massive water pipe.

The bugs crawling down the front of this office building are almost as big as a '68 VW Beetle.

This was once the largest four-sided clock in the world (yes, even bigger than Big Ben).

The bat-covered home of one of the world's most popular brands of rum is located on a tropical Art Deco campus.

Florida's oldest bar was once a morgue, complete with a hanging tree and gravestones.

A monument celebrating the idea of reaching inaccessible places.

Come for the boats, stay to explore the intriguing assortment of art.

A mysterious light in the wood, rumoured to be the the ghost of a railroad brakeman.

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

A one-stop shop for all things snowmobile, started by a snowmobile-obsessed group of friends in Wisconsin.

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

This massive 286,200-tile mosaic was the largest mural of its kind in the United States and is an early example of computer-generated art.

A bizarre house filled with an astounding array of collections.

One of the last surviving C-97s sits in a field in front of a Wisconsin inn.

For just a few bucks, this Iowa funicular will let you feel like an 1800s fat cat.

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

A beautiful botanical garden in the heart of the Natural State.

This historic hotel on Bathhouse Row in Hot Springs National Park has a storied history of gangsters and baseball greats.

Two gushing waterfalls of hot spring water within a block of each other.

Modern technology and live displays tell the story of the Pacific during WWII for the Internet generation.

Craggy concrete faces are hidden in the walls of this artificial cave along the San Antonio River.

Three hundred years of preserved Spanish colonial history in San Antonio.

Water still flows through the oldest Spanish aqueduct in America.