Welcome to Harry Potter Theory. Today, we'll be discussing ALL of the hidden rooms, unknown chambers, and secret passageways within Hogwarts School of Witchcraft and Wizardry.

Hogwarts Castle is known for the fact that its location is...well...UNKNOWN. Unplottable on a map and basically invisible to Muggles, the school and its surrounding grounds have quite the reputation for harbouring many magical secrets. This, of course, includes an absolutely INSANE number of hidden areas within the castle...In today's video, I'll be taking you through all the ones that we know about...starting with...

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