Gwangalli Beach is located just west of Haeundae beach. At the Gwanga, Suyeoung-gu, Busan. With a length of 1.4km it is just a bit shorter than Haeundae beach. It is famous for its fine sand.
It sits inside a cove which is spanned by the Gwangan Bridge. Many people come in the evening to view the lights of the bridge stretching across the horizon.
Adjacent from the beach are alleys with restaurants, coffee shops and night clubs. There is plenty to do around this area and it is a very popular destination for both tourist and locals.
Sources:
https://en.wikipedia.org/wiki/Gwangalli_Beach
https://english.visitkorea.or.kr/enu/ATR/SI_EN_3_1_1_1.jsp?cid=264250
2019 UND STUDY ABROAD IN SOUTH KOREA 