Spiritually, the focus of attention within the Golden Temple Complex is the tank that surrounds the gleaming central shrine. Known as the Amrit Sarovar, from which Amritsar takes its name, it was excavated by the fourth Sikh guru Ram Das in 1577. Ringed by a marble walkway, the tank is said to have healing powers, and pilgrims come from across the world to bathe in its sacred waters.