Dilek Peninsula-Büyük Menderes Delta National Park Aegean Region in general. The peninsula was shaped into its current form over several geological eras with the tectonic merging of Paleozoic schist formations, Mesozoic limestone and marble deposits, and finally the accretion of large clays and other sediments during the Neogene period. This is partly because of Turkey's unstable fault block terrain, and because of the close proximity of the Anatolian-Aegean plate boundary, which generates massifs of mountains all across western Turkey. This includes the peninsula and the mountains surrounding the Büyük Menderes River, known collectively as the Menderes Massif. The peninsula is highly mountainous, with most of its
Anatolian beyliks Madrassa" in Niğde (1409), all of which respect a new style that considers and incorporates the exterior surroundings also. One of the first examples of the Anatolian beylik architecture hinting at the forming of the Ottoman architecture that aims at uniting the interior space beneath one big dome and forming a monumental architectural structure is "Ulucami Mosque" in Manisa (1374) built by the Saruhan beylik. Also worth noting is the increase in constructions of madrassas that points at the beyliks' attaching greater importance to sciences. Anatolian beyliks Anatolian beyliks (, Ottoman Turkish: "Tavâif-i mülûk", "Beylik" ), sometimes known as Turkmen