I was there during April and it's the time of the year where the cold winter is starting to fade and flowers are starting to bloom. Every April, Cherry Blossom Festival is held at Yeouido Park, (여의도 공원) on the island in Seoul’s city center. One of the prettiest sight!
During the period when we were there (2013-04-12 ~ 2013-04-18), the annual Yeouido Spring Flower Festival 2013 celebrates the full blossoms of spring along Han River at Yeouido Park.