Rippling sand dunes frozen in the Arizona rock.

A huge musical instrument played by the ocean.

The largest clock face in the United States is twice the size of Big Ben and infinitely more ad-sponsored.

In the bowels of a 19th-century brewery lurks a fine-dining restaurant offering an array of themed feasts.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

This little-known collection holds everything from "Dracula" notes, to the manuscript of "Ulysses," to the forged works of Shakespeare.

One of the few remaining covered bridges in Lancaster County.

Don't get it twisted: This is the oldest pretzel bakery in the United States.

Journey inside the bowels of this sperm whale sculpture.

This stunning Connecticut mansion is actually just a one-room-deep hoax.

At 207 feet, one of the world's longest continuous escalators.

A historic cemetery with unique artwork, a Civil War fort, and also happens to be the site of the Battle of Bladensburg.

The innocent intentions of this monument are somewhat lost in the sculpture's muscled imagery.

There’s a special club house at the top for the bell ringers.

Home to two notable early-20th-century Black educators, Lucy Slowe and Mary Burrill.

Perhaps the most scandalous statue of America's first president.

The ancestral home of the 21st president of the United States of America.

One of Frank Lloyd Wright's final works was this UFO church.

Early prototype for Frank Lloyd Wright's Guggenheim.

This forgotten Frank Lloyd Wright house is an architectural marvel at the end of a sleepy residential street.

Originally conceived as part of a proposed Arizona State Capitol building in the 1950s, this structure built in 2004 stands as a monument to the architect's legacy.

Six tiny houses built for working class people form the largest intentional cluster of Wright homes anywhere.

The famed architect designed this Minnesota gas station of the future with a lookout tower.

This architectural triumph is the only Frank Lloyd Wright house in Alabama.