A tunnel with windows, so you don't miss out on the impressive views.

Small plaque marks the spot, but the true center is located about half a mile away on a private pig farm.

One of America's first dinosaur parks gives a window into Depression-era paleontology.

One of only two pod-shaped homes designed by Frank Lloyd Wright.

One of only two remaining Victorian-era greenhouses in New York.

One of the world’s largest and deepest freshwater springs, where mastodons once roamed.

This mosaic-covered bar is brimming with curated curios.

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

Inspired by a foil-wrapped potato, (seriously) the Markel Building has been deemed one of the 10 ugliest buildings in the world.

The sun acts as a key that only fits this giant keyhole twice a year.

A notorious Route 66 eatery once frequented by Al Capone.

This peaceful Massachusetts graveyard was one of the first "garden-style" cemeteries in America.

Some North Carolina Cherokee have been keeping their history alive for decades with a single play.

World War II bunker still standing on the New Jersey beach.

A living snapshot of a different time in America is preserved and maintained by a community of volunteers.

Amazing pre-Civil War ruins alongside a shallow, rocky river that hosts beautiful (but endangered) lilies.

This homegrown adoption center offers a wonderland of feline companionship.

Instead of fruit, the branches of this tree are brimming with hopes and dreams.

This nature center has one of the largest collections of native raptors in the Pacific Northwest.

Rummage through this sunken ship, but leave your scuba gear at home.

A short nature trail winds through the greatest works of poet Robert Frost.

A curious friendship between two inanimate ladies.

One-time winter retreats of prolific inventor Thomas Edison and his friend Henry Ford.

The home of one of America's most wealthy industrialists is now a historic site that remembers a more decadent time in the country's history.