Sala Do Hook or Sala Pra Do Hook is located on Ratchadamnoen Road. Originally, it was a pavilion outside the city wall at the northern triumphal arch. Which is the accommodation of travelers who did not enter the city in time because the gates of the city were closed before Originally, this pavilion was located between six Prague (Do) trees, known by the city people as "Lard Do Hok". The existing pavilion was rebuilt into a Thai style pavilion on Ratchadamnoen Road. The six padauk trees were all dead. The municipality then planted a new one to commemorate the six Pradu trees.