Geohae Chamchi in Sillim is a specialty restaurant that serves various cuts of tuna, from gamasal to baekkopsal, ordered through a course recommended by the manager. Parties of three or more who reserve in advance can watch a tuna head dismantling show, and private rooms are available. Thawed tuna melts quickly, so it should be eaten right away. The restaurant is located on Nambusunhwan-ro 185-gil in Gwanak-gu, Seoul.