in front of the other were also discovered to its south. It was found that the temple was surrounded by corridors from the middle gate to the lecture hall. This "one Pagoda" style was typical of Baekje, as the excavations of the temple site in Gunsu-ri and in Gumgangsa temple in Buyeo in 1964. The building sites of Gumgangsa temple, however, were arranged on the main axis going from east to west rather than from north to south. Early Buddhism in Silla developed under the influence of Goguryeo. Some monks from Goguryeo came to Silla and preached among the people, making a few converts. Silla was the last of the three kingdoms to develop into a full-fledged kingdom. Buddhist temples were built in Silla. One of the well known examples of Silla architecture is Cheomseongdae, said to be the first stone observatory in Asia. It was built during the reign of Queen Seondeok (632-646). The structure is known for its unique and elegant form. One of the earliest Silla temples, Hwangnyongsa temple was systematically excavated and studied in 1976, and found to have been of considerable magnitude. It stood in a square walled area, the longest side of which was 288 meters. The area enclosed by corridors alone was about 19,040 square meters. The Samguk Sagi (Memorabilia of the Three Kingdoms) records that there was a nine-story wooden pagoda built here in 645 that was about 80 meters high by today's scale. A large image of Sakyamuni Buddha is also recorded to have been enshrined in the main hall with the stone pedestal still remaining. Constructed in the middle of the 6th century, Hwangnyongsa temple flourished for more than 680 years during which time the halls were rearranged many times. In its prime, immediately before Silla's unification of the peninsula in 668, it was arranged in the "three Halls-one Pagoda" style, quite unlike the "one Hall-one Pagoda" style of Baekje's Mireuksa temple. Another major Silla temple was Bunhwangsa, on the site of which still stands three stories of what is recorded to have been a nine-story pagoda. As the remains show, the pagoda was made of stones cut to look like bricks. A set of stone flagpole pillars in addition to other stone relics also remain. Royal architecture Many palaces are recorded as having been built in Baekje. Some traces of them can be found at both Busosanseong, the third