Fastnet Rock Lighthouse, Co.Cork, West of Ireland. Fastnet Rock, also known as The Teardrop of Ireland, the last sight of Ireland for emigrants sailing to America. Located on a rocky islet. Accessible only by helicopter; distantly visible from Mizen Head and Crookhaven Lights. Site and tower closed. Designed by William Douglass and built by James Kavanagh. Construction started in 1897, First lit 1904 , Automated 1989.