An abandoned concrete jungle surrounded by a lush park.

The "World's Largest Underground Business Complex," a 55,000,000-square-foot city underneath Missouri.

The second largest waterfall by volume in the U.S., Willamette Falls is outdone only by Niagara in the amount of water that is pushed northward.

This public art piece proves that in Portland even reporting the weather is a thing of whimsy.

Portlandia is the second-largest copper repoussé statue in the United States.

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

Yup, that's where the name came from.

The bespectacled, cocktail-sipping pachyderm is a strange but fitting liquor store mascot.

This stuffed pigeon of war had the very serious name "John Silver" until he lost a leg in battle.

This tower-tomb honors a president who only held office for a little over a month but dedicated his life to his country.

Inside houses a vast collection of military aircraft and missiles spanning the ages.

Featuring one of the most complete and original collections of Presidential memorabilia, this is the site of the last front porch presidential campaigns.

The 25th President's marble casket can be visited in this classical Ohio tomb.

This moving cemetery sphere is a slowly rolling stone.

This presidential tomb was not dedicated until years after Harding's death due to personal controversy.

Mausoleums, astronomy, and animatronic dinosaurs at this memorial to an assassinated American president.

You can walk through the first Boeing Air Force One, which famously carried JFK's casket from Dallas back to D.C.

The only presidential monument to display a late POTUS's actual casket.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

An unusual, super-sized grocery adventure awaits in an Ohio suburb.

Prison made famous by The Shawshank Redemption has been out of commission since 1990.

Where beautiful signs live on forever.

A Route 66 filling station that was designed to resemble the Hagia Sophia, and is now the symbol of an arts district.

This giant mimetic milk bottle has encouraged Route 66 travelers to choose dairy since 1948.