Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

The "world’s largest honky-tonk" also has its own indoor rodeo arena.

Get up close with some alligators at this roadside farm attraction.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

This impressive working clock made of 16,000 plants changes its flowers twice a year.

This seemingly cursed monument is dedicated to one of Canada's great war heroes.

This statue of an obscure comic strip hero stands as a tribute to patriotic service and a cautionary tale about embracing fads.

A 90-year-old underground water reservoir offers a more industrial kind of tranquility.

The highest bridge in America was built for an almost unnervingly small amount of money.

The oldest continuously occupied public building in the United States.

The world's tallest statue of an American hero.

The air force base preserves its scars from the Japanese attack on Pearl Harbor.

Turning night into day in Victorian-era Austin to thwart a serial killer.

Chicago's Navy Pier on Lake Michigan was a training hub for aircraft carrier pilots during WWII.

This iron and wood Civil War city-ship was the first vessel to be sunk by an electrically detonated torpedo.

A time-capsule monument reminding future generations of the importance of efficient and effective use of natural resources.

The only nuclear weapon assembly and disassembly plant in the U.S.

A tiny waterway named after a ghost story.

The final resting place of the camel who served with the Confederate Army during the Civil War.

The highway's southernmost spot is a beloved local attraction.