BTS Festa, celebrating the boy band's 10th anniversary, will be held from June 12 to June 25 in collaboration with the Seoul Metropolitan Government, the boy band's agency BigHit Music announced Thursday.

BTS Festa will kick off on June 12 with Seoul's major landmarks, including Some Sevit, N Seoul Tower, Seoul City Hall, Dongdaemun Design Plaza, the World Cup Bridge and more turning purple, followed by various events for the fans to enjoy the celebration for the band's 10th anniversary.

A teaser uploaded Thursday on the boy band's official social media accounts showed a purple sky with moving clouds, with the words "BTS Presents Everywhere" written behind it. The following screen shows that the event will be held in Yeouido, western Seoul, on June 17.

The June 17 event at Yeouido Hangang Park, an event for both ARMY, the band's fandom, and the general public, will be the finale of the four-day celebration, the agency said.

More details are to be revealed.

The seven-member boy band BTS, with members Jin, Suga, J-Hope, RM, Jimin, V and Jungkook, debuted on June 13, 2013.

BY CHO YONG-JUN [cho.yongjun1@joongang.co.kr]