Lancaster, PA (Party like it's 1899!)

On Saturday, we went to Lancaster, PA, the center of the Amish population (maybe in the U.S., but definitely on the East Coast), also known as Dutch County (even though they are originally of German origin).
Following a conservative religious lifestyle, they usually forfeit all modern amenities like cars, electricity, and telecommunications. However, they can adapt, and in particular they can party (like it's 1899)!