AJ is a prominent Second Life figure, conducting a very popular weekly meeting of educators from all over the globe, formerly known as the Second Life Educator's Digest Group(SLED,)and recently renamed the Virtual Worlds Educator's Digest. Not sure how to pronounce that one frankly. He is a College Professor at Montclair State University in New Jersey.
These are snapshots taken from Second Life locations which have appealed to his classes and visitors. The early slides are primarily education facilities, taken from the hundreds of colleges and universities now present and working here, while the later slides offer a look at some builds by institutions that may surprise you with their presence. Keep in mind that Second Life is created by it's residents, so building skills may vary as students, professors and dedicated builders work side by side.
Please grab the lower right hand corner of the presentation with your mouse to turn the pages. I suggest the full page mode as well which is on the top bar of the presentation window(red arrow below.) Use the forward and back arrows (purple markers,) to advance the slides from that same navigation bar.