Taiqing Palace (Taiqing gong), the largest, oldest and most impressive of the temples in Laoshan, lies to the southeast of the mountain and faces the sea. Altogether, the palace houses 140 rooms and halls including the most famous Three God's Hall, Three Purities' Hall and Three Emperor's Hall. The palace was first built during the reign of the first Emperor of the Northern Song Dynasty about 1000 years ago and underwent complete rebuilding during the Ming Dynasty, some 500 hundred years later.