This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

Although built to generate electricity for Marylanders, this dam has become an all-you-can-eat buffet for American bald eagles.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

This historic iron-working village is now a ghost town so immaculate that it looks as though it was recently built.