The railings of St Bene't's Church are covered with posters for cultural events. A member of the college is about to unlock the side gate of Corpus Christi.
The 'student accommodation' pic is actually the library of Darwin College - I don't think any of it is student rooms. One of the nicer examples of 1970s (?) architecture in Cambridge, I think. Incidentally the old part of Darwin (just visible on the left) was owned by Charles Darwin's family.