there are some hot springs where you can go for a soak not too far from the town. Worth a trip for a lazy evening dip. Samlor drivers know where they are.
Near Doi Suitep theres a butterfly farm and monkey zoo that are a laugh.
On the way down doi suthep hill theres a "buddha park" with the grusome orrible Narok tortures thats a good photo op.
Someone told me The Castle...the climbing wall surrounded by bars...burned down. Thats a shame as that was excellent fun watching people fall off over a beer or three.
If you hire a bike watch yourself .... the roads are frickin chaos at rush hours in town and it can get scary as hell.
Theres also a proper street thai muay thai ring in town that do regular bouts or proper blood n guts muay thai.
Avoid the go go bars....rip off hell.

"Science flew men to the moon. Religion flew men into buildings."
"To sin by silence makes cowards of men."