San Francisco's oldest surviving monument and meeting place for 1906 survivors.

Famously misunderstood wonder of the ancient world

A giant white horse drawn on an English hillside may not have been intended to be a horse at all.

One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.

The celebrated eyesore created by starry-eyed sweethearts.

This family driveway also serves as the highest point in Illinois.

This small section of the Sleepy Hollow Cemetery is rotten with famous authors' graves.

Bouncing, delightful, mechanical art at the MIT Museum.

Two thousand artifacts from around the world collected by one woman who loved to travel.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

Largest tulip festival in America, includes fireworks, a parade, and a carnival.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

The site of Paul Revere's historic two lantern warning.

This landmark cemetery in Boston was created more than 300 years ago.

This parking garage was the site of what was - at the time - the largest cash robbery in history.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

A chilling disappearance (and rescue) of a child uncovers a geological mystery.