The citadel on top of that hill has an interesting well with verses from Quran on its wall:
"The absence of an internal water source led to the limitation of long term resistance during sieges. Because of this lack, it was decided to start the digging of a well in the rocky soil, in 1623.
The legend says that during a siege, the inhabitants of the citadel made two Turkish prisoners dig a well in the middle of the citadel in order to regain their freedom. The captives dug for 17 years, during which time they wrote verses from Quran on the well walls which can be seen even today. The fate of the prisoners isn't known, with some saying that they were released, and others that they were killed.
The well was used until 1850 when a broken wheel in the well windlass caused its abandonment.
The elders from Râșnov believe that deep in the well lies a treasure at least 300 years old. However, recently alpinists have closely explored the well, without finding any trace of it."