Wat Saket, Wat Benchamabophit, Wat Intharawihan, Lumpini Park, Thai box, Shopping centers, Chinatown
Wat Saket
http://en.wikipedia.org/wiki/Wat_Saket
Wat Benchamabophit
http://en.wikipedia.org/wiki/Wat_Benchamabophit
Wat Intharawihan
http://en.wikipedia.org/wiki/Wat_Intharawihan
Lumpini Park
If you want a little bit run in Bangkok you can visit the Lumpini park. There is lot of runners.
http://en.wikipedia.org/wiki/Lumpinee_Park
Thai box - Lumpini Stadium and Ratchadamnoen Stadium
You can visit one of two main stadiums in Bangkok where are Thai Box fights. Tickets to Ratchadamnoen Stadium cost about 2500 THB. In this price you have place near to the ring.
http://en.wikipedia.org/wiki/Lumpini_Stadium
http://en.wikipedia.org/wiki/Rajadamnern_Stadium
Shopping centers
MBK Mall is located near Wat Saket and Phaya Thai Station. Silom Shopping Mall is located near Lumpini stadium and Lumpini Park.
http://en.wikipedia.org/wiki/MBK_Center
Chinatown Bangkok
In Bangkok is Yaowarat Krung Thep Maha Nakhon - main street of Chinatown.