Kalba is home to the historic Al Badiya Mosque, the oldest mosque in the UAE dating back to 1446 CE, featuring distinctive Ottoman-influenced architecture with its unique dome design. The city serves as an important center for Islamic heritage on the UAE's east coast, with traditional fishing and pearling communities that have maintained strong Islamic customs for centuries. Local mosques and Islamic cultural centers continue to serve the vibrant Muslim community, preserving Arabic traditions and Islamic scholarship in this coastal emirate.