My take:
Food/Growth Buildings
Granary - No change
Watermill - Maintenance reduced from 2 to 1.
Aqueduct -
+1 food to Lakes, Oasis
Garden -
+1 food to Citrus, Wine. No terrain prereq.
Perhaps a
cost reduction?
Hospital - -1 maintenance.
Perhaps a
cost reduction?
Medical Lab - No change.
Units in and adjacent to the city heal 5 extra HP or start with medic?
Faith Buildings
Shrine - No change
Temple - +1 faith on incense
only, -1 maintenance. Shrine no longer a prereq
Culture Buildings
Monument - 2 culture per turn
Amphitheater - 3 culture per turn +1 culture to Dye
(no silk, cotton, or furs) monument no longer a prereq
Opera House - 4 culture per turn,
+1 culture with Silk. Amphitheater no longer a prereq
Museum - Opera House no longer a prereq
Broadcast Tower - Museum no longer a prereq
XP Buildings
Barracks - +10XP, 1 gold mentainance
stationed unit costs no mentainance
Armory - +10XP, 2 gold mentainance
each stationed unit reduces vulnerability by 1, you can station 2 units in a city
Military Academy - +10XP, 3 gold mentainance
stationed units gain 2XP/turn
Happy Buildings
Colosseum - +1 happy, -1 disorder
Zoo - +1 happy, - 1 illiteracy
Stadium - +1 happy, -1 poverty, reduced cost
Circus - +1 maintenance.
Stables, Forges, and Stone oh my!
Stables - Add +1 production. Now all mounted units gain +15% production.
Forge - +1 production to Iron, Aluminum, Coal, Uranium, Oil.
Stoneworks - No longer has a terrain prereq.
Sea Buildings
Lighthouse - No change
Harbor - No change
Seaport - 25% bonus to naval production. +1 gold in water. Harbor no longer a prereq.
Money Buildings
Market -
+1 gold spices and sugar
Mint - +2 gold, +1 gold to copper, silver,
gems, gold
Bank - No change
Stock Exchange - No change
Caravansary - +1 gold to all luxury resources,
+1 gold to truffles, cotton, fur
Science Buildings
Library - 1 scientist slot (was 0) ,
no increase in maintenance
University - 1 scientist slot (instead of 2), +1 science to jungles (was 2), +1 maintenance.
Public School - +1 maintenance
Research Lab - +1 science to jungles (was 0), deep ocean tiles have +1 science
+1 maintenance.
Observatory - +2 science and +20% science, mountain tiles have +2 science
Hammer Buildings
Workshop - No change
Windmill - No change
Factory - No change
Hydro Plant - Requires watermill (no aluminum). -2 maintenance.
Nuclear Plant - No change
Solar Plant - No change
Recycling Center - No change
Spaceship Factory - No change
Security Buildings
Constabulary - -1 discontent, poverty. 25% spy reduction
Police Station - -1 discontent, 25% spy reduction
Tourism Buildings
Hotel - No change
Airport - No change
Military Buildings
Courthouse - 140Production cost, +10Production cost per Citizen population. No maintanence cost, higher rush buy cost.
Walls - 100 hitpoints (was 50)
Castle - 150 hitpoints (was 25)
Arsenal - 200 hitpoints (was 25)
Military Base - 250 hitpoints (was 25), -25% damage from aircraft, and -50% damage from nukes.
Bomb Shelter: Removed from game.