Things to do in Suphan Buri.

A riverside Chinese-Thai market community of century-old wooden shophouses on the Tha Chin in Sam Chuk district, whose conservation won an Award of Merit in the 2009 UNESCO Asia-Pacific Heritage Awards for Culture Heritage Conservation. It is now one of central Thailand's best-known domestic weekend destinations — old shopfronts, riverside walkways, traditional sweets and a genuinely preserved streetscape rather than a rebuilt one. There is no entrance fee to walk the market; it runs daily, commonly quoted as roughly 08:30–16:30 on weekdays and 08:00–17:00 on weekends, though individual shophouses and food stalls keep their own hours and some close earlier on quiet weekdays.

In Don Chedi district northwest of the town, the monument and chedi commemorate the elephant duel of 1593 at Nong Sarai, when King Naresuan killed the Toungoo crown prince in single combat on elephant-back and secured Ayutthaya's independence. The duel appears on the provincial seal, and the site hosts a major memorial fair each January — check current dates before travelling. The monument grounds are open daily, commonly quoted as roughly 05:00 to 20:00; BAANLYY could not confirm a published entrance fee for the monument itself from official sources, and visitor reports describe it as a free public site, so treat that as the working assumption but confirm at the gate.

About 30km southwest, U Thong is a moated Dvaravati-period settlement associated with the old Suphannaphum polity and with the name Suvarnabhumi — one of the deepest archaeological layers in central Thailand. The U Thong National Museum interprets the site and its finds, and the surrounding district holds further ancient remains against a backdrop of limestone hills toward Kanchanaburi. As a Fine Arts Department national museum it follows the standard fee schedule: open Wednesday to Sunday and public holidays, 09:00–16:00 (closed Monday and Tuesday), with admission 30 THB for Thai nationals and 150 THB for foreign visitors; uniformed students, monks and novices, and visitors over 60 are exempt.

In Doem Bang Nang Buat district in the north of the province, Bueng Chawak is the region's big family attraction: an aquarium with a walk-through underwater tunnel, a zoo and gardens set on the lakeshore. It is a domestic-tourism anchor and by far the most popular day out in the province with Thai families. Pricing is split by zone: entry to the crocodile-pond buildings runs about 30 THB for adults and 10 THB for children, while the main aquarium tunnel ("Heaven of the Underwater World") is a separate ticket, commonly quoted around 150 THB adult / 50 THB child, with free entry reported for visitors 60 and over. It opens daily, roughly 08:30–16:30 on weekdays and 08:30–17:00 on weekends and public holidays — these figures move with promotions, so confirm at the gate.

The 123-metre observation tower in the middle of Suphan Buri town is the province's most recognisable landmark and the clearest symbol of the public-works era under the late Banharn Silpa-archa. Around it, the compact town centre holds the City Pillar Shrine complex, the Suphanburi National Museum, riverside markets and Wat Pa Lelai Worawihan with its revered seated Luang Pho To Buddha image, a short way west of the centre. The tower is commonly reported open Tuesday–Friday 10:00–19:00 and weekends/public holidays 10:00–20:30 (implying it is closed Mondays) — tickets run around 30 THB adult / 15 THB child before 18:00, rising to about 40 THB / 20 THB in the evening. Wat Pa Lelai Worawihan itself is free to enter, roughly daylight hours; a small donation is customary rather than required.

Suphan Buri is the heartland of luk thung, Thai country music, and is sometimes called the Nashville of Thailand. The genre's greatest star, Pumpuang Duangjan, is buried in the province, and her memorial remains a place of pilgrimage for Thai visitors. If you want to understand the province's cultural weight in Thailand, this — as much as the temples — is why. There is no fee to visit the memorial; it keeps the same daylight hours as the temple grounds it sits within.