The glory of Asgard took many years to build.
The Dettifoss waterfall in Iceland was used as a reference for the look of Asgard, according to Cinefex #136.
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The Skógafoss waterfall in Iceland was also used as a reference for the look of Asgard, according to Cinefex #136.
MAP
(Thor: The Dark World, 2013)
MCU: Location Scout 