Phra Sumen Fort & Santi Chai Prakan Park

Close your loop with a riverside breather at a surviving Rattanakosin fort. King Rama I raised a ring of defenses here, and this snow‑white bastion still anchors a leafy park. Locals spread mats at dusk, musicians warm up near the gazebo, and the light turns warm on the river. Bring snacks, sit under the trees, and watch boats slide by. Walk in from Phra Athit pier, then explore the café lanes along Soi Phra Athit. This makes a fine sunset stop after the National Museum or Wat Suthat, and the price suits every traveler.