Vimanmek, the palace, which has been build some 100 years ago by king rama 5. They have a guide who can show you around the building in either Thai or English language. This place is still peaceful and green; from this point you can also see the great view of Ananda Samakom building (another amazing place).

It is very beautiful palace but I do not know why most of tourists never been there. Next Bangkok trip, do not for get Vimanmek.