There are a view nice places to visit the top of Bangkok.
Dinning up high? 
Sirocco @ the 64FL is one of them. This beautiful view is at Sirocco. The Sirocco restaurant offers a, expensive!, delicious menu. You can be dinning on the 64th Floor of State tower building. There is also a sky bar, which changes colors constantly, and the view is just tremendous.
Sirocco, 1055/111 State Tower Bangkok, Silom Road, Bangkok 10500
Their website: http://www.thedomebkk.com
Open-Air restaurant and bar is Vertigo @ Banyan TreeHotel @61FL, 21/100 South Sathon Road, 10120
Tel: +66 0 2 6791200
Their website: http://www.banyantree.com/bangkok/index.htm
Baiyoke Tower, Observation deck @83FL, Pratunam, Bangkok, Tallest building in Bangkok, you cannot make reservation. U just have to visit!
Open Monday - Friday: 10.30am. - 10.00pm and weekend + holidays: 9.30am - 10.00 pm
