A secret 30-rai garden, hundreds of artworks and century-old rice barns will provide the setting for Treasure Discovered 2026, a six-day art and design festival taking place at De Siam Antique Chiang Mai from 5th–10th December.
Organised by Mango Art Festival, the annual event offers a rare opportunity to explore De Siam Antique, one of Thailand’s largest antique collectors, restorers and dealers, which opens its extensive grounds to the public just once a year.
Set within a 30-rai garden in Hang Dong, the festival brings together contemporary art, traditional craftsmanship and antiques. Hundreds of artworks and handcrafted pieces by artists from Northern Thailand, elsewhere in the country and overseas will be exhibited inside 27 historic wooden rice barns, some more than a century old. The works will also be displayed among De Siam’s extensive collection of antique furniture and collectibles, creating an unusual dialogue between old and new.
The festival extends across several zones, including the Art Zone, featuring participating galleries and artists; Treasure Trove, where art meets antique furniture and collectibles; and De Craft Lane, showcasing independent makers and craft brands. There will also be food and drink stalls, a main stage for emerging performers, and wellness activities including yoga and sound healing sessions led by Chiang Mai studios.

Among the participating artists, galleries and creative businesses are Art Bridge Chiang Rai, Chiangmai Art Museum, Sanpatong Art Museum, Prem Artistic, SAKET ARTSTUDIO, Dadsada Studio, Phukasem, Tonal Space, and numerous independent artists and makers from Thailand and abroad.
The festival aims to provide Thai artists with opportunities to present their work to collectors, organisations and art lovers, while strengthening the wider creative community and bringing contemporary art into conversation with traditional craftsmanship.
Admission is free, with registration at the entrance.
Event details
- Dates: 5th–10th December 2026
- Opening hours: 12pm–8pm
- Opening ceremony: Sunday 6th December, 5pm, at the Main Stage
- Venue: De Siam Warehouse / De Siam Antique Chiang Mai, Hang Dong
- Admission: Free (registration at the entrance)
For more information, visit Mango Art Festival on Facebook or Instagram (@mangoartfestival), or contact mangoartfestivalthailand@gmail.com. Line Official: @mangoartfestival.