Hagia Sophia, meaning "Holy Wisdom" in Greek, is a historic monument located in Istanbul, Turkey.

Kyiv is the capital and largest city of Ukraine, located in the north-central part of the country along the Dnieper River.

UNESCO, which stands for the United Nations Educational, Scientific and Cultural Organization, is a specialized agency of the United Nations.

A World Heritage Site is a landmark or area with cultural, historical, scientific, or natural significance, as declared by the United Nations Educational, Scientific and Cultural Organization (UNESCO).