Chao Phraya River Cruise in Bangkok, Thailand: Pier Codes, Pier Names, and Complete Boat Trip Map. Take the BTS to Saphan Taksin Station and board the boat at the Central Pier. Attractions Along the Route: ICONSIAM, Khao San Market, Asiatique The Riverfront, Democracy Monument, Wang Lang Market, The Grand Palace, The Temple of the Emerald Buddha, Wat Phra Chetuphon Wimon Mangkhalaram Rajwaramahawihan, Wat Arun Ratchawararam Ratchawaramahawihan, Chao Phraya Sky Park, Chinatown Night Market, Sampheng Market