The handsome Padmanabhaswamy Temple, dedicated to Vishnu, has a seven-story gopuram (entrance tower). The date of its original construction has been placed at 3000 BC; legend has it that it was built by 4,000 masons, 6,000 laborers, and 100 elephants over the course of six months. In the main courtyard there's intricate granite sculpture, supplemented by more stonework on the nearly 400 pillars supporting the temple corridors. The complex is technically open only to Hindus and keeps erratic hours, so call ahead to be assured of at least a glimpse.
M. G. Rd., at Chali Bazaar, Trivandrum, Kerala, 695001, India