Ohio Renaissance Festival
Renaissance-themed entertainment, crafts, games and food. It's held weekends only in September and October.
Themed weekends include "Time Travelers" (Sept. 8 & 9), "Pirates" (Sept. 15 & 16) and "Fantasy" (Sept. 22 & 23). On Time Travelers weekend, attendees are encouraged to "dress as your favorite character inspired by a movie, TV series, comic book, sci-fi or fantasy work." It's sponsored by The Pandora Society, which also produces steampunk events.
The location is about 20 miles south of downtown Dayton and 40 miles northeast of Cincinnati.