The Institute? - FO4 Wall Glitching
Getting into the Institute before you're supposed could give way to sequence breaking the game. Meeting Father before completing The Molecular Level quest and then meeting Father as intended after completing The Molecular Level could be buggy or broken.
The Minutemen Ending of the game gets you to explore the Institute‘s secret entrance through it's water cooling system. However this water cooling system is always accessible with the Institute cooling pipes being blocked off until you do the Minuteman ending. But we can access those before you're supposed thanks to Bethesda‘s flawless physics engine.