The Tesseract is stored in the Valaskjalf Dungeons
Political event
2013CE
16/11
16/11
2018CE
10/9
10/9
As one of her first acts as All-Mother, Frigga takes the Tesseract from Heimdall and has it hidden deep within the Valaskjalf Dungeons.
Related Location
Valaskjalf Dungeons
Related timelines & articles
Valaskjalf Dungeons
Timeline of Asgard (article)
Timeline of the Infinity Stones (article)
Timestone Timeline