Many abbandoned quarries as well as meadows, forests, springs or little hidden lake. There are many possibilities in Prokop valley even for lazy tourists. You can also find places for picnic and BBQ. Alternatively you can use bike trails, there are many of them. Children will enjoy small playground, for adults there is outdoor gym.
You won't believe you are still in Prague.
You can use bus or train to get there, but most beatiful way is by train. It is going from Smíchov station every 30/60 minutes.
Mon-Su: Open 24 hours