This quirky roadside attraction provides insight into Minnesota's logging history.

A fence constructed completely of skis on Monroe Street.

The watery grave of an impractical idea.

This picturesque cliffside beacon no longer calls to sailors but shines once a year in honor of a famous shipwreck.

This bright yellow building is packed with sweet treats from all around the world, from chocolate-covered crickets to whoopie pies.

This large midwestern cavern features impressive rock formations and an underground waterfall.

The first declared National Monument in the United States.

Twelve plaster figures inspired by da Vinci's famed painting haunt the desert landscape above a real-life ghost town.

One of the most unusual geological features, recognizable from a dozen hit movies.

The world's largest Holstein cow.

A true roadside icon standing on the same plains that the herds once roamed.

A museum, walk-through diorama, and library nestled under one castle-like roof.

A place where the laws of nature seem to have gone completely berserk... but of course haven't.

A roadside collection of over-sized iron creations that are a bit more macabre than most.

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

A fitting attraction for the corn capital of the world.

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

The largest dune field in the Mojave offers a chance of hearing the 'singing sands.'

A pair of large white marble lions guard this stretch of the Mojave Desert, and it is utterly mysterious how they got there.

The ghost town that ended up on Ebay.

An experimental, automotive replica of Stonehenge.

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

An off-grid art installation that encourages its visitors to imagine a world without waste.

A hand-built folk art installation covered with messages of God's love.