The N Seoul Tower, officially the YTN Seoul Tower and commonly known as the Namsan Tower or Seoul Tower, is a communication and observation tower located on Namsan Mountain in central Seoul, South Korea. At 236m, it marks the second highest point in Seoul. Built in 1971, the N Seoul Tower is Korea's first general radio wave tower, providing TV and radio broadcasting in Seoul. Currently, the tower broadcasts signals for Korean media outlets, such as KBS, MBC and SBS.