I'm surprised nobody has written yet about
Brandywine Springs. The place has a fascinating, multi-century story, tracing from Native American gatherings and legends; to General George Washington preparing promptly-abandoned defense works against the oncoming Howe/Cornwallis assault; to a fashionable spa and hotel (designed by U.S. Capitol Building architect T.U. Walker) located on the site from 1827-1853 and visited by such notables as Henry Clay; followed by a thriving early-20th century amusement park.
I'd like to write the article for a wiki, but I think this one's going to Wikipedia Review, not Wikipedia.