This Buddhist temple is named after the Hindu god Aruna, a personification of the glow of the rising sun. The temple dates back to the 17th century, however, its characteristic colorful spires were added during the reign of King Rama II in the 19th century. They are decorated with Chinese porcelain and flicker in the sunshine.
With its 80 meters, the central Khmer-style spire (or prang), is the highest prang in Thailand. You can climb it to get some great views of the Grand Palace and Wat Pho temple, just note that the steps are very steep.
The central prang is surrounded by four pavilions containing Buddha images. The ordination hall features a golden image of Buddha designed by King Rama II himself and its walls are decorated with beautiful murals.
The best way to get here is by boat through the Chao Phraya River, come early in the morning to avoid the crowds. Since the temple is still a place of worship, dress appropriately and cover up before entering the sacred site.
Also, don't be disappointed if you are not allowed to climb the highest part of the temple, it's still a beautiful sight and you can get some beautiful pictures there.
General admission: 50 THB
Official Website http://www.bangkok.com/attraction-temple/wat-arun.htm
Phone +66 2 891 2185
Address 158 Wang Doem Road, Wat Arun, Bangkok Yai, Bangkok 10600, Thailand
Coordinates 13°44'38.416" N 100°29'18.1" E