Hong Sieng Kong is a retro Chinese-style cafe in Bangkok that will transport you back to 1920s Shanghai without needing a time machine or passport. With its antique furniture, cobalt walls, and outdoor seating by the Chaoprayah river, this cafe-cum-museum offers a unique experience for history buffs and coffee lovers alike. Don't miss their signature Orange Coffee and Iced Chocolate Frappe with extra chocolate bites for a taste of old-school charm in the heart of the city.