In the past, daily commerce in Thailand was conducted mostly along rivers and canals (or khlongs in Thai). Bangkok's water network was busy and served as the principal means of communication causing Bangkok to be called as the "Venice of the East" by early European visitors. Damnoen saduak Floating Market in Ratchaburi is one of the most popular floating markets in Thailand. Every day many Thai and foreign tourists travel here to shop, eat, and absorb the atmosphere of Thailand water markets that have been like this for over a 100 years. Klong Damnoen Saduak Damnoen Saduak is the straightest and longest canal in Thailand. Get on the bridge to get a photo top down of the boats under, and try every delicacy offered, everything is good there!

It's located around 2h30 from Bangkok, so it's best to do the tour including train market as well and other attractions on the way such as the dragon temple.