The four short city-centre walks which can be done in abouit an hour based on Temple Bar, Grafton Street, O'Connell Street and St Stephen's Green. The longer walks vary from two to three hours and cover the Georgian city on both sides of the river, Victorian Dublin, the medieval core and the Phoenix Park. There is also a walk along the Grand Canal, a walk that takes you to 25 of Dublin's best-known pubs, and walks that guide the tourist around literary Dublin.