Ruins of an American Civil War iron forge still survive today.

The 25th President's marble casket can be visited in this classical Ohio tomb.

This amended headstone marks the grave of a participant in one of the most successful military deceptions of all time.

This quirky roadside attraction dives into the many theories surrounding North America's most infamous hairy cryptid.

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

A haunting collection of the vanished and disappearing natural world.

Every year, a Louisiana town remembers a brief Civil War truce inspired by Masonic brotherhood.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

The grave of America's 11th president is not in some grand monument but instead it's hidden away on the grounds of the Tennessee Capital.

This remote eatery and museum is preserved as a time capsule of a small Icelandic fishing town.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

This innocuous New Mexico storefront was once the secret jump-off spot for Manhattan Project scientists.

A number of craters left by fatal mortar strikes have been filled with red resin to remember those lost during the Siege of Sarajevo.

Modern technology and live displays tell the story of the Pacific during WWII for the Internet generation.

World's first "penitentiary," meant to be humane, drove men insane.

A onetime gangsters' hideaway where you can dine on steaks, fine wines, and cigars just like they once did.

A nondescript building that's been functioning as a speakeasy for nearly a century and a half.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

The state's oldest continuously operating museum houses more than 5,000 Civil War artifacts.

One of the largest amphitheaters in Europe is a former Nazi gathering place that still stands today.

This elegant Colombian fortress was one of the torture headquarters for the Spanish Inquisition.

Florida's oldest bar was once a morgue, complete with a hanging tree and gravestones.

Gladiators battle and chariots race daily in the ruins of a once-great Roman city.

A monument to the egos of two railroad magnates that fell into decline along with their careers.