"On Human Life", a pastoral letter from Archbishop Chaput on the 30th anniversary of Humanae Vitae
"The Real History of the Crusades", by Thomas F. Madden, a really good article on the Crusades from Crisis magazine
Painted Churches, a collection of pictures of medieval wall paintings in English churches. I've only just started looking at this site and so haven't seen everything, but it's interesting so far.
The Art Renewal Center, a site filled with beautiful pictures. It's another site I've only explored a little, but that's because there's so much there.
Also, I note with sadness that Father Bryce Sibley has decided to end his blog, A Saintly Salmagundi. I figured I would like Fr. Sibley the moment I saw his Mary, Exterminatrix of Heresies picture--plenty of people see Our Lady as speaking softly, not many picture her carrying a big stick! I wish Fr. Sibley good luck with his new projects.