Exterior view of a stupa inside the Royal Palace grounds in Phnom Penh, Cambodia, Indochina, Southeast Asia, Asia

exterior view stupa inside royal palace grounds phnom penh cambodia indochina southeast asia asia stupa royal palace phnom penh cambodia architecture khmer buddhist religion travel tourism history culture asia southeast asia landmark monument white stone carving statue ornate detail intricate design tier pagoda spire sunny day sky blue clear lush green greenery serene peaceful atmosphere traditional heritage