St Martin
There's a cemetery under there!
Toward the front of the cathedral was a glass panel in the floor with this little paper sign taped to the floor next to it. Turns out there's a 1,000 year old cemetery under part of this very old church (the chruch was completed in 1452) Anyway, the glass in the floor allows you to (note: not for the squeamish...) look at the bodies of people that thought they were laid to rest in peace more than 1,000 years ago.