I live on the site of an indian massacre. Some night we here very strange noises from the fields out back and the next day the field is littered with arrow heads that look like they've ben there for 200 years.
I no longer have the picture but off of the UK island there was an oil company post created then abondoned. It is a large donut with a lighthouse on it. Also within it was rooms and the such. A port was created for a decent sized boat to fit in the "hole". I think there was a swimming pool and tennis court on it in the picture.
I used it as a model for the island of Moradin in Caldonia. It is the dwarven island and created from the shell of a volcano.
Other places-
Horror- New Orleans cemetaries
New England forests
Barren- Most of Arizona
Space- Most of Mars. There's the face structure and the grand canyon which dwarfs earth's.