The biggest mistake one can make is to come here just for a few touristy photos of the Phra Sumen Fort, and miss the scenes of everyday life seen throughout Santichaiprakan Park.
It's a peaceful blend of fun-loving locals and free-lovin' hippie Westerners. My favourite time to come is in the evening when the weather is slightly cooler, the river breeze starts coming in, and the trees offer shady spots perfect for lying on the grass with a book, or to just enjoy the view of the Chao Praya River.
Local kids running around playing ball, groups of schoolkids walking home after school, mums strolling past with prams in tow, Afro-haired foreigners blowing balloons for the local kids shouting with glee, hippie westerners practising yoga on the grass, or just sitting out enjoying the sun while strumming random tunes on the guitar..
And come sunset, the gradients of blue orange pink purple isn't a scene one tears away from easily. All with the statuesque steel structure of the Grand Rama VIII bridge overlooking it.
And the park's not the only thing that Phra Athit offers. There're lots of good food around too! Naie Soie or Khun Deng Guay Jub Yuan Restaurant for awesome soup noodles, and Ann's Sweet, for - you guessed it - amazing sweet items. You can't leave without trying her Triple Chocolate Bavarian cake.
Or head to nearby Khao San for a more touristy yet equally interesting side of BKK's night life.