One of Jeff Koons’s largest sculptures and his first commemorative work.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

Montmartre's sole surviving windmill became an iconic landmark for 19th-century painters, artists, and bohemians.

A wonderful and easily overlooked museum tucked in Ohio's Burke Lakefront Airport.

Bizarre Cavern.

This hidden treasure provides a charming access point along the south side of Baker Park.

According to local history, this cast-iron canine was nearly melted down for bullets during the Civil War.

One of the only memorials dedicated to journalists who died in combat.

Built by the patriotic residents of Boonsboro in a single day.

This unassuming building houses one of the world's most extensive collections of cars created by automotive legend Carroll Shelby.

This now-abandoned outcrop is an important Native American spiritual site, overtaken by European settlers and mining pollution.

According to local legend, a tree grew from the stake that killed this alleged vampire. In reality, he probably died from influenza.

Inspired by a music box, a small town Vietnam vet carved an entire carousel full of animals by hand.

One of the few surviving Panama Canal steam shovels stands outside a tiny Colorado mining museum.

A unique collection of military history dating back to the American Revolution.

For 14 years, this former stray dog greeted every train passenger that arrived in Fort Collins.

This tea house was a hand-built gift from Boulder's sister city in Tajikstan.

When this 160-year-old church was being built, a stonemason included a hidden homage to his late daughter.

This Canadian monument to the man who invented the telephone allows visitors to get up close and personal with the artifacts of his life.

These powerful, if squat, Canadian waterfalls flow in different directions depending on the time of day.

The 32nd president's sprawling cottage sits on an island enclave jointly managed by the U.S. and Canada.

A quarter mile off the coastal tip of Maine you'll find the "Beloved Island" of Franklin Delano Roosevelt.

This candy-striped tower is the farthest east you can go in the United States.

This colorful theme park dedicated the official fruit of Maine serves sweet, tasty treats.