The longest river in Ireland and indeed on the islands of Ireland and Great Britain, the River Shannon is one of Europe’s finest waterways. The river forms part of Offaly’s border as well as being a province border for Leinster. There are a host of activities on the River Shannon, from renting a cruise boat in Banagher on the Shannon or Shannonbridge, to fishing, kayaking and swimming. Why not check out Shannon Harbour, where the Grand Canal connects with the Shannon after commencing her journey in Dublin. Take a trip to Clonmacnoise to see how the Shannon meanders past the amazing Monastic Ruins there.