The remnants of a 19th-century ironmaking complex hidden in the woods of Connecticut.

Mysterious stone tower featured in many alternative histories of the New World.

The only surviving fragment of the lost Narragansett Pier Casino.

The sweetest graveyard in the world is filled with headstones for dearly de-pinted ice cream flavors.

All that remains of the once-booming chain is a single orange-roofed restaurant.

A colorful public mural in San Antonio's West Side encourages students to stay in school.

The 40-foot-tall votive candle is the largest of its kind.

Three hundred years of preserved Spanish colonial history in San Antonio.

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

This sparsely populated town offers a look back in time.

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

Home to New Mexico's longest bar, this watering hole also has a mining museum and a haunted history.

Unrepaired walls from a 1920 anarchist bomb attack.

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

This anonymous businessman sculpted in bronze became an enduring memorial after 9/11, and had been mistaken by rescue workers for a survivor in the rubble.

A clock set into the concrete outside a Manhattan jeweler has been telling time underfoot for over a century.

The last living thing to come out of the rubble after 9/11 is now a symbol of hope and resilience.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

35,000 grape hyacinths flow like water down a garden hill.

This delicate museum is devoted to the art and industry that once supported Cape Cod's oldest town.