Goguryeo (Koguryo) ruled northern Korea during the Three Kingdoms period from the 1st century BCE to 7th century CE, and the best evidence of the kingdom's prosperity and artistry can be found in the many surviving tombs of the period. https://www.worldhistory.org/article/966/the-tombs-of-goguryeo/ #History #Goguryeo #GwanggaetotheGreat #Kofun