Here's the winged horse, Pegasus. Though of course it is only part of the horse, it is still a pretty large constellation. Remember, this one is often drawn connected to the the star Alpheratz in Andromeda.

The large asterism of the Great Square of Pegasus is sort of a misnomer, since it isn't all Pegasus, but includes one star of Andromeda. The stars that make up the Great Square aren't all that great and easy to spot, so you might have a hard time seeing them from a city location. Like Andromeda, Pegasus is primarily an autumn constellation.