Shorter version of the Ghosts and Dragons Tour (cca 60 minutes) - private tour for a group.
The tour starts by a very famous centrally located sight called Stone Gate (Kamenita vrata) in the upper town area. It looks like a little open-air chapel inside a tunnel. We're meeting on the upper side of the Stone Gate. Exact address is Kamenita 9. It's close to a small pharmacy with a black eagle symbol above the entrance.
This is the link to the tour page with the description and the location indicated on the map: http://www.secret-zagreb.com/zagreb-ghosts-and-dragons-tour-1/
The tour guide will be there dressed in a black cape with a candle.