happy 600 years birthday

Our University is 600 years old! Originally an offspring of Prague it's one of the oldest that has been teaching continuously.
The main campus is being rebuilt but is sadly not ready for the public or good photos. Parts of the old complex were so good that they are being incorporated in the new and this stairwell is a great example. I was hoping for a better shot but really need an evening photo with internal lighting to show you how the two stairways cross and re-cross eachother. But birthdays can't wait.