Tourism in the Republic of Ireland on were built by them. As Dublin Airport is located just outside the city, most international visitors to Ireland begin their stay here. Among the main attractions in Dublin are Dublin Castle, the seat of British rule in Ireland until 1922, Phoenix Park, one of the largest inner city parks in the world, The General Post Office, one of Ireland's most famous buildings due to the 1916 Easter rising, Kilmainham Gaol, a former prison turned museum that held and executed the rebels of the 1916 Rising and Trinity College, where the Book of Kells and the Book of Durrow are
Easter Rising after the Easter Rising, W. B. Yeats commemorated some of the fallen figures of the Irish Republican movement, as well as his torn emotions regarding these events, in the poem "Easter, 1916". Some of the survivors of the Rising went on to become leaders of the independent Irish state. Those who were executed were venerated by many as martyrs; their graves in Dublin's former military prison of Arbour Hill became a national monument and the Proclamation text was taught in schools. An annual commemorative military parade was held each year on Easter Sunday. In 1935, Éamon de Valera unveiled a