What's the average for parking or should I park somewhere and take a different means of transportation to there? And what does the kids museum cost to enter?

Park on site, it's reasonably priced. Didn't pay for the kids museum

The first 30mins are free. Then it goes to $5 for 4 hours.

Parking.....is okay.....but there is a hill you can park on.....to save money.....just gotta take a walk

Parking was $5 for 2 hours $10 for 4 hours. Train museum is free, but Science City and the Planetarium costs as does the lego exhibition.

Parking is available on site.

There is parking. We went to the escape room.