Rainbow Bridge



The Rainbow Bridge is the crystillne, prismatic bridge that runs from the palace at the center of Asgard to Heimdall's Observatory at the edge of Asgard. It supplies the Observatory with the rainbow-like energy that powers the Bifrost.

History
Thor and his companions traveled across it on their way to Heimdall and to Jotunheim. On Thor's return to Asgard, he and Loki battled at the entrance to Heimdall's Observatory which resulted in Thor breaking the Bridge and destroying the Bifrost. This resulted in the outbreak of raids throughout the Nine Realms.

After the War for Earth, Thor and Loki transported back to Asgard using the Tesseract. Heimdall used the Tesseract's power to rebuild the Bifrost and transported the armies of Asgard across space to quell the uprisings.

Trivia
Not to be confused with the Bifrost, the Rainbow Bridge is the physical bridge in Asgard linked to Heimdall's Observatory.