Wat Ratchanaddaram is a temple compound built by order of King Rama III in 1846. Its main structure, Loh Prasat (โลหะปราสาท, Thai for metal castle), is easily spotted as its spires are of black iron, not the usual glittery gold. It is in a highly unusual style: the wat itself is a five-storied gleaming white structure with rows of Buddhas and nice views from up top, very elegant, calm and relaxing after the crowds at the big temples. A good view of Bangkok is afforded from the top tier. The 37 metal spires signify the 37 virtues towards Enlightenment. At night, the square around it is beautifully illuminated. Also check out the Buddhist market at the rear of the complex.