Where is the Crypt?

Hint 1 of 5:

You may have stumbled upon the Crypt earlier while exploring the Bell Tower.

Hint 2 of 5:

The Crypt is directly below the Cathedral.

Hint 3 of 5:

Since you cannot fall through the hole in the Cathedral floor without harm,
find a safe entrance from the Bell Tower.

Hint 4 of 5:

At the top of the ramp leading to the Bell Tower, go through the door
directly in front of you.