A vibrant fantasy city built among towering trees, with intricately carved wooden buildings exuding a medieval charm. At sunset, the sky is aglow with warm hues, casting a golden light over the landscape. Suspended in mid-air, a colossal enchanted crystal radiates luminous beams that dance across the city and forest, bathing the scene in an ethereal glow. The digital painting features a rich, warm color palette that enhances the magical ambiance of this treetop metropolis.