The third canal of Amsterdam is called Prinsengracht, and is dedicated to Prince William the Silent, the hero of Dutch national independence. This canal is more varied in appearance, with elegant homes alternating with warehouses and manufacturing facilities. There are a number of old buildings used as homes for the elderly here, in keeping with the efficient social support network developed in the 17th century. Also moored along the banks of the canal are some of Amsterdam’s approximately 2500 houseboats which are hooked up with electricity, drinking water and sewage systems. Some of them can be rented, even just for a night.