On my last trip to Bangkok, there was only one thing I wanted to see. The Lumpini park and it's famous Asian water monitor lizards.
While Bangkok is generally not a very pretty city, the parks and other green areas offer very nice contrast to the concrete jungle.
The park is clean and well maintained.
Peace and quiet. Lumpini park is a good place to escape Bangkok's hectic life
The plants are well watered during the dry season
Palm tree
Flowers blossoming
Security cameras are everywhere
Lumpini park has some art as well