Bangkok rewards the broke traveller more than the rich one. The ฿4 ferries, ฿10 canal boats and free riverside parks reach places taxis never do, and the ฿40 bowl of boat noodles beats anything on a hotel menu.
Bangkok's 57-hectare central park opens 04:30–21:00 with free entry. Monitor lizards up to 2m patrol the lakes, retirees practise tai chi at dawn, and free public aerobics classes run near the Rama VI statue.
Nine floors of spiral galleries opposite MBK, free to enter Tuesday–Sunday 10:00–20:00. The upper three floors host rotating Thai contemporary shows; lower levels hold indie bookshops, ฿60 coffee and free air-conditioning.
A riverside Sino-Portuguese lane of car-part scrapyards, 200-year-old shophouses and Hokkien shrines. Walking costs nothing: find the So Heng Tai mansion courtyard, the Rong Kueak street-art alley and the Guan Yu shrine on Soi Wanit 2.
A pocket park around the white octagonal fort built in 1783 to guard the Rattanakosin canal mouth. Locals dance aerobics on the promenade at dusk while the sun drops behind Rama VIII Bridge. Free, open until 21:00.
The Thonburi-side market behind Siriraj Hospital where nurses and students eat. Khanom jeen noodles run ฿40, boat noodles ฿20 a bowl, mango sticky rice ฿60. Reach it on the ฿5 cross-river ferry from Tha Chang pier.
Bangkok's oldest food quarter, wedged between the river and Silom. Soi Charoen Krung 50 hides Muslim roti stalls, Prachak Pet Yang's ฿70 roast duck rice served since 1909, and ฿15 iced Thai tea from carts along the old tram street.
A one-metre-wide wholesale alley running a kilometre through Chinatown, trading since the 1780s. Hair clips, fabric and snacks sell at wholesale rates — dried mango ฿20 a bag, sandals ฿50 — while motorbikes squeeze past shoppers.
After dark the four-lane Chinatown artery turns into a street kitchen under neon Chinese signage. Nai Ek Roll Noodle serves ฿50 kuay jab, T&K Seafood grills ฿100 prawns on the pavement, and juice carts charge ฿30 a cup.
An artificial island in a river bend, kept car-free and jungle-green. A ฿4 longtail from Khlong Toei crosses in three minutes; bikes rent for ฿80 a day and elevated concrete paths thread straight through the mangroves.
A canal-side market inside Bang Krachao aimed at Bangkokians rather than tour groups — open Saturday and Sunday only, 08:00–14:00. Grilled river prawns, ฿30 coconut ice cream and ฿40 noodle bowls served on plank walkways over the water.
A working Thonburi monastery with a 69m green glass stupa on the fifth floor of its white pagoda, completed in 2012, and an eight-storey seated Buddha outside. Entry is free and a lift climbs to the cosmic ceiling mural.
The riverside promenade below the mall is public and free, reached by free shuttle boats from Sathorn and Si Phraya piers every 15 minutes until 23:00. Sunset lights the water and fountain shows run at 18:30 and 20:00.