[DrPraetorious]

The following sites do cool stuff (so not just money, labs, gems, etc.)

Site 566, the Temple of the Solar Bull
Fire 2, Rarity 2, any regular land
2 Fire Gems, commander Heliodramus

Site 567, Temple of the Sacred River
Water 2, Rarity 2, any regular land
1 Water Gem, 1 Death Gem, commanders Renata and Renatus

Site 568, Telesterion
Nature 2, Rarity 2, Forest
1 Nature Gem, 1 Earth Gem, commanders Mystes and Epoptes

Site 569, Grove of Revelry
Nature 2, Rarity 2, Forest
1 Nature Gem, commander Reveler

Site 617, Valley of the Dead
Death 1, Rarity 2, Plains/Forest/Wasteland
1 Death Gem, 1 Earth Gem, Enter to Summon Mummy

Site 619, Carrion Thicket
Death 1, Rarity 2, Forest
1 Death Gem, 1 Nature Gem, Enter to Summon Carrion Beast (715)

Site 633, Torture Tower
Blood 1, Rarity 1, Farmlands
Makes a simple hillfort, 3% horrormark

Site 634, Bloodshade Glen
Blood 2, Rarity 2, Unique (anywhere?)
Blood Magic Bonus 20, Conjuration Bonus 15, 1 Blood Slave

Site 635, The Slaughterhouse
Blood 2, Rarity 2, Unique (anywhere?)
Enter to summon Foul Spawn (460), Maenad (435) and Ghoul (198).

Ew.

Site 636, The Lodge
Blood 2, Rarity 2, Unique (anywhere?)
1 Blood Slave, Commanders Conjurer, Circle Master, Assassin

Site 637, Pool of Unhealthy Rites
Blood 2, Rarity 2, Any Land
Alteration 20, 1 Water Gem, 1 Death Gem, 3% Disease

Site 638, Bloodstone Mirror
Blood 2, Rarity 2, Any Land
Scrying, Thaum Bonus 20

Site 639, Tower of the Devil's Bride
Blood 1, Rarity 1, Unique/Any Land
+5 Unrest/turn, Enter to summon a lousy imp

Site 644, City of Dates
Nature 2, Rarity 0, Wasteland Unique
Makes 75 supplies, 50 gold, 1 water gem, 1 nature gem and a Motte-and-bailey*

*I'm begining to suspect that I have the fort #s wrong here....

Site 688, Nest of Bats
Blood 2, Rarity 1, Cave
1 Death Gem, Enter to summon Beast Bat

Site 689, The Lesser Abyss
Blood 2, Rarity 1, Cave Unique
+40 Unrest, Enter to summon Fiend of Darkness

Site 690, Splattermaid Gorge
Blood 2, Rarity 2, Cave Unique
1 Air Gem, Enter to summon Beast Bat

Site 691, Kelp Sea
Nature 2, Rarity 0, Shallows
2 Nature Gem, 1 Water Gem, Enter to summon Sea Stag

Site 692, Forest of Amber Kelp
Nature 2, Rarity 2, Shallows Unique
NFW Gem, Commander Air Elemental (572?)
NOTE: I bet this is a typo because the amber clan units are 573-576.

Site 693, Sentinent Current
Water 2, Rarity 2, Shallows
Conjuration 20, 1 WG
NOTE: Mis-spelled? Should be "Sentient"?

Site 694, The Darkness
Water 2, Rarity 2, Deeps Unique
Thaumaturgy 20, 1 WE Gem

Site 695, The Gate in the Deep
Water 2, Rarity 2, Deeps Unique
Conjuration 20, 2 W Gem

Site 696, The Basalt Forge
Earth 2, Rarity 2, Deeps Unique
Construction 20, 1 E Gem

Site 697, Tomb of Seven Oracles
Death 2, Rarity 3, Cave Unique
Enter-to-summon Cavern Wight, 2D1E Gem

Site 698, Infinite Cavern
Earth 2, Rarity 3, Cave Unique
Conjuration 20, 2 EG

Site 700, The Umbral Conclave
Death 2, Rarity 3, Cave Unique
Conjuration 20, 3 DG