Birla Mandir in Kolkata is a stunning marble temple dedicated to Lord Krishna and Radha, known for its elegant architecture and peaceful ambience. Built by the Birla family, it features intricate carvings, polished white marble, and a serene interior that offers a quiet space for prayer and reflection. The temple looks especially mesmerizing in the evening when illuminated beautifully, making it a major spiritual and architectural landmark of the city.