Eorai University is a famous women's university in Korea. Eorai University Station on Subway Line #2 is nearby, so you can get off at that station and walk to it.
Itaewon is a famous cosmopolitan neighborhood in Seoul, and you can take subway line 6 and get off at Itaewon Station.
Namsan Park is a large park in the center of Seoul, which you can access by taking Subway Line 4 and getting off at Chungmuro Station and then walking.
Seoul Tower is a landmark in Seoul and is located in Namsan Park. You can take Subway Line 4 and get off at Myeongdong Station and walk to Namsan Tower.