This is an amazing place to visit while being in Bangkok. On local maps look for Wat Pho.
There is lots of statues and small temple alike places there to look at before getting the main attraction.
Loads of cats everywhere too.
Great historical paintings too.
And the main thing - Golen Buddha Laying (Reclining)
Its really huge, whole big room is with this.
Its a sacred place, notice the DO NOT TOUCH sign.
If you go to Bangkok, you have to check this place. Its amazing.