Dollymount often known as "Dollyer" to Dubliners, is a coastal suburban area on the north coast of Dublin Bay, within Clontarf, on the northside of Dublin, Ireland, just east of Saint Anne's Park. A famous Wooden Bridge from Clontarf links to Bull Island and the 5 km long stretch of sandy beach and dunes on the island's eastern shore; while the island is located in Clontarf and Raheny, the beach is called Dollymount Strand. The name of Dollymount appears to have originated with a house bearing that title which stood on or adjoining the site of Sea Park in Mount Prospect Avenue, and which is shown in Duncan's Map of 1820.
Source: Wikipedia