In "Stellar Odyssey Portal," a mural spans a vast wall, depicting a cosmic tunnel that stretches into the infinity of space. The tunnel's architecture is a fusion of advanced technology and stardust, lined with structures reminiscent of a futuristic city. A spectrum of stars, planets, and nebulae adorn the cosmic backdrop, while a vibrant rainbow bridge connects the observer's space to the celestial beyond. Silhouetted figures are drawn towards the light at the tunnel's end, adding a human element to the scene and inviting contemplation about the intersection of humanity's future with the great expanse of the universe. This piece is a visual symphony that celebrates exploration, science, and the unknown mysteries of the cosmos, all converging in a moment of awe-inspiring spectacle.