This book refutes the thesis of Samuel Huntington's Clash of Civilizations. Instead, it supports the Alliance of Civilizations supervised by the United Nations. It describes religious-historical and cultural monuments in the region including Istanbul Cibali-Fener-Balat-Ayvansaray where three monotheistic religions live together under the peaceful conditions and they practice their religions. The thesis of Alliance of Civilizations has been examined theoretically within the context of the book.