Moving to nova, what are the places to know

Hello! I am just moving to nova from Philadelphia. Still looking for housing. But it should be around inova Fairfax for work.

In Philadelphia, we have a long urban park to go for road biking (schuylkill trail). Is there something similar here?

Or some quick hiking? (We had wissahichon)

Or if you want to have city walk?

In general what are the famous places/areas i need to know about and explore first.

I will soon have a baby and probably i need to figure out places to go with the baby too.