Much construction occurred before celebrations of Kim Il-sung's eightieth birthday, including the building of grand apartment complexes and the Reunification Highway, a four-lane road connecting the capital and the Demilitarized Zone. According to a journalist writing in the Far Eastern Economic Review, the highway is "an impressive piece of engineering" that "cuts a straight path through mountainous terrain with 21 tunnels and 23 bridges on the 168 kilometers route to P'anmunjm." As in many other construction projects, the military provided the labor.