This question already has an answer here:
- Can a muggle use magical objects (potion, time-turner, etc)? 1 answer
- Do Muggle Parents Visit Their Muggleborn Children at Hogwarts? Are They Totally Excluded? 2 answers
- Can a Muggle get through to Platform 9 & 3/4? 1 answer
- Could Muggles enter Diagon Alley from Leaky Cauldron? 1 answer
- What would happen if a muggle went inside the Diagon Alley? Assuming they could 3 answers
In the Harry Potter books, I don't recall any mention of a muggle accessing an enchanted building or place or even using a magical object. If a wizard allows it, can muggles enter an enchanted building such as Hogwarts or leaky cauldron? I know squibs can, but they are descendants of wizards and they can also see dementors while muggles can't.