A spooky defunct railroad tunnel now part of a sprawling trail.

The famed architect designed this Minnesota gas station of the future with a lookout tower.

A haunting army of decomposing, moss-covered stuffed animals and dolls guard this swinging truss.

Built in 1933, this unique ballroom is nicknamed the "floating dance floor."

Homemade outdoor church and sculpture garden decorated with glass shards.

The watery grave of an impractical idea.

This posh mansion began as a family's estate and ended as the site of a murder ripped from the pages of a pulp novel.

Eternal resting place of the grave robber and murderer who served as inspiration for many of cinema’s famous madmen.

This Minnesota town celebrated the state's 100-year anniversary by creating a massive ode to nature's smartest bird.

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

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

The only Frank Lloyd Wright-designed structure in the architect's hometown.

Meet the "Green Monster" of Monico, Wisconsin.

A museum of the dime museum that features weird entertainments of yesteryear, from feejee mermaids to flea circuses.

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

A bizarre house filled with an astounding array of collections.

Covering 37 subterranean acres, this Armillaria gallic is a famous fungus with its own festival.

Half of a waterfall goes into the river while the other half seems to disappear.

Duluth mineral magnates built this charming art deco lodge to be their private clubhouse.

This solitary gravestone is separated from the rest in Appleton, explaining why local legends continue to surround it.

This cave holds a surprisingly colorful variety of geological oddities.

Hidden away in the city of Madison, Wisconsin is a nearly forgotten home that Frank Lloyd Wright built for a childhood friend.

A largely forgotten and touching neoclassical marble fountain overlooking a bear mound effigy.

The arboretum whose marshy soil sucked up the dreams of housing developers.