MRT (Metropolitan Rapid Transit) is Bangkok rapid transit system, which is known as subway. Currently MRT provides service only one line (Blue line) which has 18 stations between Hua Lamphong and Bang Sue.
Huai Khwang MRT station is a station that is located on Ratchadaphisek Road, near Huai Khwang Intersection.
What to see around Huai Khwang MRT Station
Huai Khwang Night Market, a local night market, is in a walking distance from the station. At this market, you can expect to eat and shop like a local. There are several food stalls selling fresh foods and also ready-to-eat foods. Clothing and shoes are also available here.
Hope this information helps. Enjoy traveling Bangkok!