This haunting tombstone comes complete with a heartbreaking story of love and loss.

This replica of the Greek structure is in the heart of Nashville.

A walk through the historic city center, under the streets of Seattle.

A wall of chewing gum moonlights as collective art.

270 million year-old forest of stone.

Seoul amusement park boasts a Korean-speaking pachyderm.

Numerical symbolism abound at East Asia's oldest observatory.

The first American department store, and home to the largest operating musical instrument in the world.

The world’s first penitentiary, meant to be humane, drove men insane.

A take-out restaurant that only serves cuisine from countries with which the United States is in conflict.

A tradition unlike any other, this marks the site of the annual Groundhog's Day tradition.

A museum commemorating the Donora Smog, which killed 20 people in October 1948 and sparked national outrage over air pollution.

North America’s largest collection of horological devices and home to a colossal clock with a dizzying array of features.

A toxic ghost town sitting atop a massive coal fire.