Serbian monasteries are the pinnacle of Serbian medieval art. At the beginning, they were under the influence of Byzantine Art which was particularly felt after the fall of Constantinople in 1204, when many Byzantine artists fled to Serbia. Noted of these monasteries is Studenica (built around 1190). It was a model for later monasteries, like the Mileševa, Sopoćani, Žiča, Gračanica and Visoki Dečani. Numerous monuments and cultural sites were destroyed at various stages of Serbian history, with destruuction in Kosovo being the recent example. In the end of 14th and the 15th centuries, autochthonous architectural style known as Morava style evolved in area around Morava Valley. A characteristic of this style was the wealthy decoration of the frontal church walls. Examples of this include Manasija, Ravanica and Kalenić monasteries.