Special Excursions (from SRT)-- The State Railway of Thailand organizes these 'Special Tourist Rail Trips' to popular destinations such as Pattaya, Ko Samui, and Kanchanaburi. Not all destinations are offered all the time, so it's best to ask about 'Current Excursions' available either at the Hua Lamphong Railway Station Booking Office or at any travel agency. Usually, these SRT arranged are much cheaper than trips offered by private tour operators.