A mesmerizing Phase-Space Astral Inca city, suspended amidst ethereal clouds, rendered in stunning photorealism using an octane engine, 8k resolution. This ancient city tells a tale of mystery and wonder, its intricate architecture adorned with designs that defy reality, enhanced by a vividly detailed matte painting. The scene is alive with deep, rich colors playing in perfect harmony with complementary tones, illustrating a world where fantasy knows no bounds. Concept art captures the essence of a forgotten world, inviting one to dream with eyes wide open in this captivating 8k fantasy landscape.