It can travel very easily in the Thai capital (touktouk, taxis, buses, underground ...) and out of Bangkok there are also many buses or taxis but do not forget the train ! Very cheap, it will enable you to discover the country around Bangkok.
And 80 km from the city is the site of Ayutaya I really advice you to visit it. Taking a train, spending the day will be one of the most beautiful day that you live in Thailand !


Bangkok station

Ayutaya is the former capital of the kingdom just before it becomes Sukothai (where I have not yet had the chance to go but I surely will during my trip in a few months). It is a incredibly peaceful and beautiful place.
Do not only see the main temple of Wat Sri Samphet, visit also the temples and the reclining Buddha behind and above all do not miss a trip to Wat Yai Chaya Mongkol.


Wat Sri Samphet




Wat yai chai mongkol

Of course, Thailand is also about the dreaming beaches with hot and light blue water in the islands in South of the country....< br /> Like in Koh Samui (the only one I know for now)