In Norse myths, the realms of Asgard (home of the gods) and Midgard (home of humans) are connected through the Rainbow Bridge, known as Bifrost. This bridge allows the gods to travel to Midgard and interact with humanity. Bifrost symbolizes the connection between the divine and earthly realms, facilitating communication and the exchange of influence. The bridge is portrayed as a vibrant, bright pathway, emphasizing the importance of the relationship between gods and mortals in Norse cosmology.