1. Eastern State Penitentiary – Philadelphia, Pennsylvania

- Photo Credit: Wikimedia Commons
2. Edinburgh Castle – Edinburgh, Scotland

- Photo Credit: Wikimedia Commons
3. The Myrtles Plantation – St. Francisville, Louisiana

- Photo Credit: Wikimedia Commons
4. Gettysburg Battlefield – Gettysburg, Pennsylvania

After the Battle of Gettysburg, 1863.
Photo Credit: Wikimedia Commons
5. Paris Catacombs – Paris, France

- Photo Credit: Wikimedia Commons
6. Villisca Axe Murder House – Villisca, Iowa

- Photo Credit: Jo Naylor / Flickr
7. The Beechworth Lunatic Asylum – Beechworth, Australia

- Photo Credit: Wikimedia Commons