Advice-columnist's bell tower, paid for with pennies.

The only surviving prototype for Buckminster Fuller's house of the future.

The world's smallest park was dedicated in 1948 as the only colony for leprechauns west of Ireland.

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.

This 36-foot-tall bronze Lady Liberty holds a real flaming torch.

Find out what it sounds like when doves cry at Prince's recording studio estate turned museum.

A giant "X" symbolizes the blood spilled from the brutal Juárez drug wars.

The only subway station in the city that still makes use of gap fillers.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

A fitting attraction for the corn capital of the world.

In the middle of a busy airport, a statue honoring the astronaut who told Houston that Apollo 13 had a problem.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

This stunning gothic ruin was a casualty of the Indiana steel industry crash.

The park is home to the United States's only still-operating Dutch windmill.

This cheerfully-named branch of the Chicago River is the fetid result of years of blood, entrails, and meatpacking waste.

The remains of a religious colony, its amusement park, zoo, and baseball empire.

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

A small car graveyard sits in the shadow of the famous Cadillac Ranch.

The Grand Canyon of Texas.

These half-buried combine harvesters just off Route 66 are an homage to the Cadillac Ranch.

A pair of giant legs paying homage to a poem, a king, and it would seem, socks.

Once named the “world’s oldest gas station” due to its unusual construction material.