Imagine a breathtaking scene where a swirling vortex of vibrant colors encapsulates a brilliant clock face, its hands spinning wildly. This time travel portal shimmers with glimpses of ancient civilizations, futuristic cities, and mystical landscapes. Ethereal figures step through the portal, dressed in attire from different eras, while galaxies and nebulae dance in the background, creating a mesmerizing blend of past, present, and future.