Church buildings are structures specifically designed for Christian worship and community gatherings. They often feature elements such as a sanctuary for services, an altar, and seating for congregants. Many church buildings also include spaces for education, fellowship, and community outreach, reflecting their role in the local community. Architecturally, church buildings can vary widely, from simple designs to elaborate cathedrals. Common styles include Gothic, Romanesque, and Modern, each with unique characteristics. Notable examples include St. Peter's Basilica in Vatican City and Notre-Dame Cathedral in Paris, showcasing the diversity and cultural significance of church architecture around the world.