Pong Patchamit Fort
Pong Patchamit Fort was built around 1852 by King Rama IV to protect an important commercial canal. The fort was also used by the marine department, which used the huge flagpole nearby to signal the arrival of ships in the river.
The fort was nearly dismantled in 1949 but was hastily listed by the Fine Arts Department. It's not much to look at, and seem to mainly server as an outdoor lounge area for the police station across the street.
Pong Patchamit Fort sits on a small road running past the police station, behind the Taksin Hospital. You should pass it if walking from the Klong San market and Wat Thong Noppakhun.