Rama IX art museum: Virtual museum of Thai contemporary artists. Listings of museums, galleries, exhibitions and venues. Contains lots of information on Thai artists and art activities.
There are some strange modern sculptures on a field, lost and hidden here. They look like they are made with recycle iron, steel or concrete. Probably by a neighbor...
Theater
You might see some "street traditional theater" around Korat. They call it "Leekay" in Thai (ลิเก). Some houses of Leekay can still be found on Mookamontri rd.
Others
Golden Triangle Heart : Introduction of contemporary art and artists living and working in Northern Thailand and Myanmar. Guide to art galleries, art News and exhibitions with focus on Chiang Mai.