Building in Jerusalem also made repeated re-use of older stone work and architectural elements. Herodian- and even Hasmonean-cut stones can be found in buildings of the Byzantine, early-Islamic and Crusader periods; and a stone-carved rosette window from a Crusader church is incorporated in the 16th century Ottoman fountain opposite the Bab al-Silsila (Gate of the Chain) entrance to the Haram esh-Sharif (the temple Mount).