This farm is not huge, but has a choice selection of snakes, with informative shows twice a day. It's about 60 baht if you go at the time of the show, otherwise it's free. Watch out, it can be gory if you go at feeding time. Also go here if you get bitten by a dog or snake during your stay - the Institute Pasteur on site provides anti-rabies vaccinations and other anti-venoms - bring the offending snake or a description of it if you can.
At one end of Henri Dunant road; take a short cut from Saladaeng Skytrain station across Soi Thaniya and cross Rama 4 road. Also near the subway station - the stop before Hua Lampong station.
One of the area's leading hospitals, should one need medical attention - emergency or otherwise - this hospital is famous for the high calibre of its patient care.
Brookline Ave., Boston
www.bidmc.harvard.edu