Attempting to open the door here will cause King Rauru to turn up again and tell Link that there's actually a fourth shrine on the Great Sky Island.

Source: https://gamerant.com/legend-of-zelda-tears-of-the-kingdom-tloz-totk-closed-door-walkthrough-temple-of-time-shrines/

So before you carry on with your adventure in Zelda: Tears of the Kingdom, here are solutions for every Shrine in the Great Sky Island region.

Source: https://screenrant.com/zelda-totk-sky-island-shrines-ukouh-inisa-gutanbac-nachoyah/

While most of the challenges are navigation-related, some players are against the soldier constructs that still wander the Great Sky Island.

Source: https://kotaku.com/zelda-tears-of-the-kingdom-totk-shrine-sky-island-1850438058