The Schuylkill River Trail runs right through Conshohocken, and is great for easy bike rides! We recommend making a stop at the Conshohocken Brewing Company that is right on the trail. If you can't bring a bike, this trail is also great for walking.
There are a lot of great museums, historical sites, and restaurants to try in Philadelphia. Recs from Cori's mom include: Magic Gardens, Barnes Museum, Philadelphia Art Museum, Eastern State Penitentiary, Reading Terminal Market, Independence Hall/Liberty Bell.
Grab a coffee and check out the cute shops in Chestnut Hill, where Cori's parents live.
Valley Forge is great for scenic walks and is a quick drive from Conshohocken.