Pennsylvania's highest point is spotted with boulders which were pushed to the surface by nothing but cold.

Beyond the usual stories that attend old prisons, this one has deep bloody undercurrents.

Pennsylvania's own Roswell-style UFO mystery.

A particularly creepy abandoned hospital that sparks interest for lovers of the supernatural.

The oldest Dutch colonial stone house in New York City is a hidden gem on the border of Brooklyn and Queens.

This Queens beer hall preserves a German culture and language that is all but lost.

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

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

Elevated freight railway turned wildly successful urban park.

The first piece of public art dedicated to LGBT rights.

An aptly-named street near the birthplace of the modern LGBT rights movement.

New York City's only preserved family home from the 19th century.

Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

Tucked in the back of this amazing antique store is an important piece of medical history.

One of the few remaining American elm trees in New York’s Tompkins Square Park was the birthplace of a new religion.

Neoclassical bank designed by NY architects Helmle & Huberty.

"Leave a He-Man, Take a Transformer" and share a story about your real-life superhero.

Nothing says indulgence like a 1,500-pound chocolate castle.

This abandoned dream castle and its cemetery look out over the city that once inspired their creation.

The largest burial mound in the United States holds the remains of prehistoric West Virginians.

Despite its lavish ornamentation, and wholesome lifestyle of its devotees, this mountain commune has faced its share of issues.

A statue commemorating a beloved stray dog who was adopted by the entire neighborhood where he lived.

One of Madrid's oldest trees, with a long and colorful history, resides in El Retiro Park.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.