Historical clue formulations

• In Norse myth, world held up by the branches of the tree Yggdrasil — 2026-03-29
• Setting in Marvel Comics — 2021-08-13
• Mythical realm accessible only by the rainbow bridge Bifrost — 2020-12-17
• Home of the Norse gods — 2017-06-07
• Home to Norse gods — 2016-07-06
• Odin's realm — 2016-06-01
• One of the nine worlds of Norse mythology — 2016-04-13
• Mythical abode of heroes slain in battle — 2014-04-12
• Odin's home — 2013-11-17
• Heavenly home of the Norse gods — 2011-11-24
• Odin's home — 2004-09-24
• Home of the Norse gods — 2000-06-11