Sit on the east side of the river and enjoy a view of the Castle/Bridge and St Peter's & Paul. A walk along the strand gives a pleasant vista of the town and access to Burgess Park.
Take a boat on the river.
Take a drive out to the Hodson Bay which is on Lough Ree. Lovely peaceful spot with a fine hotel and golf course.
Coosan Point located about two miles north of Athlone is a nice entry point for Lough Ree.
Dean Crowe Theatre is situated on the west side of the town about a five minute walk from St Peter's and Paul. Check the Westmeath Independent newspaper for listings.