Beautiful and historic buildings. As I wrote in my other reviews, If you can, come early or late but not in the middle of the day when it is totally crazy with all the day tourists crowds. It feels like a different world when it is quiet. And you will have the solitude to thoroughly enjoy it.
Just for that very reason I recommend to spend at least one night in Brugge. So you can explore the very center of the town early in the morning and in the evening - when most of the people have left and the light is best for taking photos.
We stayed at Brugge-man Bed and Breakfast and I can not recommend it any higher, it was fabulous. Please, see my review for it.