- Central Applications Office Visitor No. since 01/11/2001 Tower House, Eglinton Street, Galway, Ireland Tel. (091) 509800 Fax (091) 562344 Int'l. +353-91-509800 Fax +353-91-562344 Menu Welcome to the Central Applications Office web site. The purpose of the Central Applications Office (CAO) is to process centrally applications for admission to the first year of undergraduate courses in ...www.cao.ie