Sigiriya, or Lion's rock, is an ancient rock fortress and palace ruin surrounded by the remains of an extensive network of gardens. Sigiriya is also renowned for its ancient fresco paintings which are reminiscent of the Ajanta Caves of India. Sigiriya was built during the reign of King Kassapa I and it is one of the seven World Heritage Sites of Sri Lanka. The Sigiriya rock is a hardened magma plug from an extinct and long-eroded volcano. It stands high above the surrounding plain, visible for miles in all directions.