The Church of St. Nicholas is a historic Christian church located in various regions, with notable examples in Greece and Russia. It is dedicated to Saint Nicholas, a revered figure known for his generosity and kindness, often associated with the tradition of Santa Claus. The architecture typically features Byzantine or Russian styles, characterized by domes and intricate frescoes. Many Church of St. Nicholas buildings serve as important cultural and religious sites, attracting visitors and pilgrims alike. They often host various services and celebrations, especially on December 6, the feast day of Saint Nicholas. These churches reflect the rich heritage and traditions of the communities they serve.