Bangkok Phra Sumen Fort
Located on the corner where Phra Athit Road and Phra Sumeru Road meet, This Fortress was constructed in the reign of King Rama I in 1783 along with 14 other fortresses and battlements surrounding the capital. Vientiane people were recruited to build this fortress. Its shape is octagonal one with three levels. Inside the walls, there are steps leading up to the fortress. Altogether, there are 38 rooms for ammunition and weapon storage.
The roof collapsed during reign of King Rama IV or V, but was restored by the Fine Arts Department in the early 1980s using old photographs as a guide.
Nowadays, there is a small park surrounding the fortress. You can enjoy a pleasant walk along the Chao Phraya river all the way to Phra Pinklao Bridge.