The longest structure of its kind ever built in Michigan.

An oddly poignant roadside attraction celebrating American folklore.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

The home of 1.5 million wood letters for printing is still a functioning workshop.

Paranormal activity on the great lakes.

A metal ring in the middle of the road marks the exact spot where the Soviet satellite crash-landed in 1962.

Arguably the best example of an authentic Dutch windmill in the United States, rivaling its counterparts in the Netherlands.

An exhibit of items from the mental institution where Mary Todd Lincoln lived after her son conspired to have her committed.

The Kalamazoo factory has 100 years of instrument-making, and one big wartime secret.

The universally beloved children's television figure is interred on a high hilltop in one of western Pennsylvania's oldest cemeteries.

A macabre farm reserved part of its 222-acres for dead bodies, all in the name of science.

This mechanical wonder towers above a river in Michigan's capital city.

Perched atop a brick smokestack, this enormous lug nut symbolizes the local minor league baseball team.

A horse-drawn 1858 steam pumper fire engine encased in glass on the front lawn of a Michigan insurance company.

This architectural stunner is one of the few surviving Egyptian Revival theaters in the U.S.

This huge stew pot is the focal point of the "Community Soup" event, which honors tradition and soup.

A bronze sculpture honors the 12 black students who attended the first integrated public high school in the segregated South.

Eight feet in diameter and more than 24 feet around.

An eclectic assortment of medieval architecture in a small Iowa town.

This massive railroad spike celebrates the 1939 premiere of the movie “Union Pacific.”

This UFO landing strip was created by a charitable Wyoming city that was worried about residents of Jupiter.

This giant ice cream cone is the last remaining icon of a Salt Lake City staple.

An enormous image of Utah's salt flats made entirely from tape.

A place of great reverence for Trekkies everywhere, a hero's future birthplace.