In Norse mythology, Bifröst is the bridge between the land of mortals, Midgard, and the land of the gods, Asgard. The gods cross it every day to meet and decide things at Urdarbrunn (Well of Urd) under the treeYggdrasill. The bridge is a rainbow. It was built by the Æsir and is guarded by the god Heimdall. - View it on GitHub