Summary of editorial
der_seri (2020): As one can see on the photos, only two installations with pull-up bars. The bars are from wood and a bit thick. You can do i.e. horizontal rows by jamming your feet under one bar and having your hands on another. Bars are quite close to one another (perhaps 25 cm). There are bicycle racks nearby where you could do dips. Not optimal, but not much choice in this area.