BTS is Bangkok elevated rapid transit system, which is known as Skytrain. With BTS, you can go to the major areas in Bangkok without facing traffic jams. Currently BTS has 2 main lines: Sukhumvit line and Silom line.
Punnawithi is a BTS station on Sukhumvit line that is located near Sukhumvit Soi 101, on Sukhumvit Road.
Here is the map for the area around Punnawithi BTS Station. I have got this map from BTS official website. The area map for the other BTS stations can be found here. To enlarge, click at the map.
What to see around BTS Punnawithi Station
Let’s look at the map.
There is nothing much to see at this station. No big shopping malls. No historical sites. No museums. This area is a residential area where you can find some street food stalls and local shops.
The only tourist site in this area is Wat Dhammamongkol, the temple with its 14 story pagoda and each story has its name. The temple is quite big and offers several Buddhist activities. Many locals go to this temple to learn meditation.
Hope this information helps. Enjoy traveling Bangkok!