This headstone-like marker inscribed with three words has been an utter mystery for over a century.

All that remains of this Massachusetts town, demolished in the name of progress, is a stone marker.

One man is on a singular quest to name an island after a famous hip-hop artist.

A careful eye can find hundreds of dinosaur tracks running along the Connecticut River.

This tribute to the founding father of the American dictionary originally contained a spelling error.

A 19th century library favored by Edgar Allan Poe and H.P. Lovecraft, known by locals as "the Ath."

Books bound in human skin and H. P. Lovecraft's letters are among a few of the treasures this library has to offer.

Last residence of H.P. Lovecraft featured in his story "The Haunter of the Dark."

Once the tallest building in Detroit, this Gothic church houses some of the oldest stained-glass windows in the country.

Why a column on the entrance is inscribed with a verse from the Quran is one of Sicily's many mysteries.

The pleasant woodland cemetery that has inspired more than its fair share of wild legends.

This boulder with a 200-word legal dedication to God has remained hidden in the woods for over 150 years.

The site of the tragic isolation of Nipmuc Native Americans left to perish in King Philip's War.

The only surviving building of historic West Boylston, which was flooded to create the Wachusett Reservoir.

This giant Boston statue of Mary is standing on a globe to show her power over the universe.

A memorial dedicated to victims of the Irish Potato Famine who perished while quarantined on this island.