The Metal Castle (Loha Prasat) is a stunning location situated near the Maha Kallan Fortress. It is a place that attracts significant interest from international tourists, drawn by its unique beauty that is hard to find elsewhere. The area around Ratchanadda Temple does not charge an entrance fee for both Thai and foreign visitors. As for the Metal Castle, there is a nominal entry fee of 20 baht for foreign tourists. After exploring the Metal Castle, visitors can easily continue their journey to the Golden Mount (Phu Khao) or Wat Saket. There are also numerous delicious dining options available in the vicinity, making it a perfect spot to enjoy both culture and cuisine.