The Obsidian Eagle (Architect: Praetorian (also flattened about 50 jillion blocks), Slave Labor: Tunnelrat/V3GN0M3):
http://mc2.injate.com/maps/map.html#layerId=LayerA&worldX=-3879&worldY=0&worldZ=-4255&zoom=5
(Southwest of the eagle is The Pantheon - 100% Praetorian, some materials supplied by 80HD crew
Reed Island (Wesman - and TSUHortgrl? - maybe others, was built before my time)
http://mc2.injate.com/maps/map.html#layerId=LayerA&worldX=-3573&worldY=0&worldZ=-3620&zoom=4
Reed Tower (Injate - also has pretty sweet cactus farm underneath)
http://mc2.injate.com/maps/map.html#layerId=LayerA&worldX=-3782&worldY=0&worldZ=-3352&zoom=6
Orthanc (Isengard from LOTR) (Tunnelrat/V3GN0M3/Praetorian)
http://mc2.injate.com/maps/map.html#layerId=LayerA&worldX=-3732&worldY=0&worldZ=-3273&zoom=7
V3GN0M3S Giant Igloo (Architect: V3, some snow provided by 80HD and maybe Lolsniper):
http://mc2.injate.com/maps/map.html#layerId=LayerA&worldX=-4150&worldY=0&worldZ=-3219&zoom=7
(Special note: Awesomer igloo to southleft is Maelstrom's)
Downeast's SuperMega Farm, awesome raised/graveled track, and entrance to LRUN1WF (Architect: DownEast, Slave Labor (Farm only): Tunnelrat
http://mc2.injate.com/maps/map.html#layerId=LayerA&worldX=-4109&worldY=0&worldZ=-2879&zoom=4
Skunkworks redstone test-site (Praetorian):
http://mc2.injate.com/maps/map.html#layerId=LayerA&worldX=-3460&worldY=0&worldZ=-3104&zoom=7
[Praetorian] Palatine Hill (north side), Vivec (glass tower), Trojan Sheep (Wool)
[Tunnelrat] Vinyamar(carved mountain/fort/cathedralish thing)
[Dymestl] Caerfa Dymestl (checkerboard tower/farm/glassworks connection to Vinyamar) (Damaged when beta changes to fire spread radius joan of arc'd the entire thing)
http://mc2.injate.com/maps/map.html#layerId=LayerA&worldX=-3277&worldY=0&worldZ=-3032&zoom=5
Water Fort (NickCooper):
http://mc2.injate.com/maps/map.html#layerId=LayerA&worldX=-2819&worldY=0&worldZ=-3170&zoom=6
S3's (yet unnamed) Town (and dock/tower to east/north east):
http://mc2.injate.com/maps/map.html#layerId=LayerA&worldX=-3427&worldY=0&worldZ=-3469&zoom=5
Astanyx's monster forest and poignant message:
http://mc2.injate.com/maps/map.html#layerId=LayerA&worldX=-2249&worldY=0&worldZ=-3548&zoom=5
The Pirate Bay (Tunnelrat/Praetorian)
http://mc2.injate.com/maps/map.html#layerId=LayerA&worldX=-1873&worldY=0&worldZ=-3721&zoom=6
Dymestl's something or other (some Welsh name... Gwynydd or some shit) - (Biome jacked up by bad seed, needs reset to desert, thawed):
http://mc2.injate.com/maps/map.html#layerId=LayerA&worldX=-1420&worldY=0&worldZ=-3799&zoom=6
Ackbar (IT'S A TRAP) Deadfall Trap (80HD Collaborative Effort)
http://mc2.injate.com/maps/map.html#layerId=LayerA&worldX=-1779&worldY=0&worldZ=-4414&zoom=5
Egyptian Towers/Pyramid/Sphinx (Nick Cooper):
http://mc2.injate.com/maps/map.html#layerId=LayerA&worldX=-1736&worldY=0&worldZ=-4765&zoom=6
The Volcano (Wesman) (Beta ruined all the burning logs):
http://mc2.injate.com/maps/map.html#layerId=LayerA&worldX=-1673&worldY=0&worldZ=-3042&zoom=6
Skygarden (Old Quarter) - Wesman/TSUHortigrl: http://mc2.injate.com/maps/map.html#layerId=LayerA&worldX=-3546&worldY=0&worldZ=-3223&zoom=7
Water Base (goes to bedrock) Infernal - http://mc2.injate.com/maps/map.html#layerId=LayerA&worldX=-3831&worldY=0&worldZ=-3104&zoom=7
Donkey Kong (Lolsniper and friend(s):
http://mc2.injate.com/maps/map.html#layerId=LayerA&worldX=-3846&worldY=0&worldZ=-3204&zoom=7
Mega Man:
http://mc2.injate.com/maps/map.html#layerId=LayerA&worldX=-3696&worldY=0&worldZ=-3197&zoom=7
Link:
http://mc2.injate.com/maps/map.html#layerId=LayerA&worldX=-3630&worldY=0&worldZ=-3292&zoom=7
Contra:
http://mc2.injate.com/maps/map.html#layerId=LayerA&worldX=-3799&worldY=0&worldZ=-3474&zoom=7
Lolsniper's Fort:
http://mc2.injate.com/maps/map.html#layerId=LayerA&worldX=-3966&worldY=0&worldZ=-3291&zoom=6
The Legendary Tower of Fail (Drak):
http://mc2.injate.com/maps/map.html#layerId=LayerA&worldX=-3614&worldY=0&worldZ=-3096&zoom=8
Tomamid (SirThomas1, aka The Arsonist, aka Ragequit Jackson):
http://mc2.injate.com/maps/map.html#layerId=LayerA&worldX=-3583&worldY=0&worldZ=-3019&zoom=7
The Fail Trench (Tunnelrat) - I blasted this after taking a wrong turn when I was severing the 80HD continent from the rest of the world... wasted a ton of TNT.
http://mc2.injate.com/maps/map.html#layerId=LayerA&worldX=-1486&worldY=0&worldZ=-4565&zoom=6
Valenvaryon (80HD Portal Nexus - Mostly Praetorian, some Tunnelrat):
http://mc2.injate.com/maps/map.html#layerId=LayerA&worldX=-1884&worldY=0&worldZ=-4144&zoom=5
(It connected to ~20 portals around the alpha world, and to each corner of the 80HD continent via Propylon Gates (ala Morrowind):
http://mc2.injate.com/maps/map.html#layerId=LayerA&worldX=-2601&worldY=0&worldZ=-2896&zoom=8
http://mc2.injate.com/maps/map.html#layerId=LayerA&worldX=-1636&worldY=0&worldZ=-4728&zoom=8
(Trivial, but I used this to import the alpha world, this is the exact center of the old map:
http://mc2.injate.com/maps/map.html#layerId=LayerA&worldX=-2768&worldY=0&worldZ=-4115&zoom=8)
There is a ton of stuff underground/inside mountains that you can't see here, but that's the majority of points of interest.