Wat Phra Kaew
It’s a famous royal temple. The temple houses emerald Buddha statue that was carved from a single piece of emerald. Originally, this Emerald Buddha is from India. Then it traveled to Sri Lanka, then to Burma, then Cambodia, and when the Thais took control of Angkor Wat, the Emerald Buddha was brought to Thailand.
To read more on Emerald Buddha: http://en.wikipedia.org/wiki/Emerald_Buddha
–> Take a taxi boat on the Chao Praya!
Any taxi boat will do. It’s the best way to get the real Bangkok experience as Bangkok used to be a city where boats were the main mode of transport (before westerners introduce cars and roads everybody got around by boat and canals)
–> Visit Or Tor Kor Market
This market has a café-like area as well as a fresh food market. It’s an awesome place to explore different Thai dishes and desserts.
It opens 6am-8pm everyday, but the market is much more lively on the weekends.
Get there by MRT subway and stop at Kamphaeng Phet Station and exit number 3.
Fried Frog Legs
This is not ubiquitous, but if you come across this on a menu, you must try it!
You can get fried frog legs at The Deck, a restaurant over looking Wat Arun (aka temple of dawn). I really recommend this restaurant for dinner. They have amazing view and really great Thai dishes (I recommend their Tom Kha Kai).
Here is their website: http://www.arunresidence.com/page_dinning.php?cid=3&cname=Dinning%20Experience