Discovery Square, located in downtown Erie, includes:  The Erie Art Museum and The expERIEnce Children's Museum.  The EAM is open Tues-Sat 11am-5pm and on Sunday's from 1pm to 5pm.  
The ECM's hours are Wed- Sat 10am – 4pm and on Sunday from 1pm – 4pm.  During July&August, the Children's Museum is open on Tuesdays.
It costs a little under $4 for admission to the Children's Museum, while admission to the adult version is about half of that.  They do have one free day a week at the "adult" museum. 
The Children's Museum is very cool and interactive( that is why it may cost a little more).  
Discovery Sqare is a inexpensive, fun way to spend a cold or rainy day.
                        
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