In short, a RainDrop is a Dutch Umbrella home. These homes can be found at a number of businesses across Center City Philadelphia and the surrounding area. The Dutch Umbrella have been observed crowding at these homes between periods of rain.

It's not completely understood, but it is thought that the crowding of this social creature is essential to their survival.  Careful study of the movements of Dutch Umbrellas may help us understand more, but at this time it is clear that returning to a RainDrop is important and may be the key to avoiding the extinction of the Dutch Umbrella.

Seen here in it's natural setting is an average size crowd of
Dutch Umbrellas in a RainDrop.