Celestial City is a fictional place described in John Bunyan's allegorical novel, The Pilgrim's Progress. It represents the ultimate destination for the protagonist, Christian, symbolizing heaven and eternal peace. The city is depicted as a beautiful and radiant place, filled with joy and the presence of God. In the story, Celestial City is reached after a long and challenging journey, highlighting themes of faith, perseverance, and redemption. The city is surrounded by a wall made of precious stones, and its gates are made of pearl, emphasizing its divine nature and the rewards awaiting those who remain steadfast in their spiritual journey.