Top Knot Rooftop Bar & Restaurant is on the eighth floor of One Bangkok, a hotel near the Chao Phraya River in Bangkok. It serves breakfast and dinner, with eggs Benedict and the American breakfast ordered from an a la carte buffet and bread and fruit taken from a self-service corner. At dinner the Chao Phraya River is visible in a 360-degree view. On a birthday, a cake or dessert and a congratulatory song are provided, and the menu is not large.