People tend to check in during these times:
For the one of the best views of Sheffield city centre around, sit on the bench at the top of the hill near Bishop's House - located exactly where the park geotag is - I'm sat there now on a sunny Sat
If you bring your dog please practise responsible poopascooping.
If you go down the hill on the left there's this insecure crib you can climb into
There's a secret garden near the Council offices that is occasionally open for special events - check for notices on the gate.
Great for sledging when there's snow on the ground. Try the hill near the Bishop's House entrance.