Wat Pho, otherwise known as the Temple of the Reclining Buddha, is an ancient and grand temple in the scheme of Bangkok’s history (as in not much is terribly old in Bangkok). Located at the southern end of The Grand Palace complex, Wat Pho is an awesome sight and well worth taking the time to see.
Keep in mind that Wat Pho is a working temple. That is, it’s a holy place and you need to respect the place it holds in Buddhist culture. It’s a place of peace and serenity, even if that serenity is quite often belied by hundreds of foreign tourists taking happy snaps while the Thais try to perform their devotions. Later in the day it’s not so crowded.
The cost of entry to Wat Pho for foreigners is 100 Bt (about $3). Locals don’t have to pay. For your entry fee you’ll also get a bottle of cold water and the loan of a green robe if you’re not appropriately dressed to visit a temple.
You can book a three hour private tour of Wat Pho and other famous Bangkok temples starting from US$33 per person. Spend some time admiring the reclining Buddha and exploring the pretty gardens surrounding the temple. There are lots of other Buddha statues to be seen here if you take the time to look around.