According to the Korean Film Council, the production will be on location from March 20 to April 12 using the Jamsil and Mapo Bridges on the Han River; Cheongdam Bridge, Teheran Boulevard, and Gangnam Station, in the Gangnam district; and other locations that will be used include Sangam DMC and Yongsan.
The report indicates that stars Chris Evans and Scarlett Johansson will be the returning cast members on set during this time and they'll likely be joined by Korean actress Kim Soo Hyun, whose role is still being kept under wraps.
Filming has already concluded on the sequel in Johannesburg, South Africa. Principal photography will also take place at Shepperton Studios in the U.K.
Starring Robert Downey Jr., Chris Hemsworth, Mark Ruffalo, Chris Evans, Scarlett Johansson, Jeremy Renner, Samuel L. Jackson, Thomas Kretschmann, Aaron Taylor-Johnson, Elizabeth Olsen and James Spader, the Joss Whedon-directed Avengers: Age of Ultron will hit theaters on May 1, 2015.