Free admittance!
Cash only for the pool (only $1 after 5pm). This beautiful county park has many baseball diamonds, a soccer field, a mile-long footpath, several picnic pavilions with grills, and many playgrounds. It is within walking distance of Aidan & Delmy's apartment and is a great place to relax for a few hours.
This is the national park where Aidan works. Boat tours are free and you will need to get your tickets the day you plan to go.
There are oodles of places to get on the towpath if you're looking for a flat bike-hike trail that goes many miles in both directions. Dam #4 in Sharpsburg and Dam #5 in Clear Spring are two spectacular spots to do some exploring and witness the power of the Potomac River.
Seaside resort & tourist town for those looking for some rays!