Why Vienna is headquater of OPEC?

Vienna serves as the headquarters of the Organization of the Petroleum Exporting Countries (OPEC) primarily due to its strategic location and historical significance as a center for international diplomacy. The city offers a neutral ground for member countries to convene and negotiate, fostering a collaborative environment. Additionally, Austria's long-standing commitment to neutrality and its established infrastructure for hosting international organizations make it an ideal choice for OPEC's operations.