UN-truth posted some pictures taken at Taraweeh and Jummah prayers at al-Aqsa mosque yesterday. I wish I was there.
For more pictures, Visual Dhikr has a wonderful 360 degree panoramic view of the inside of the al Aqsa Mosque (not to be confused with the Dome of the Rock with it's gold dome and blue tiles).
Malek's Page on Bayt Al-Maqdis has more pictures of the whole al Aqsa compound, and and explanations and descriptions of the different buildings.
Friends of al Aqsa has a page that describes all of the little buildings around the al Aqsa compound. I used to sit with my friends under the "Dome of the lovers of the prophets" to study Qur'an together, while our little kids ran around and played in the gardens. (They are college students now.) This site used to have a very nice interactive guide, but it doesn't seem to be working for me now. InshaAllah it will be back.