Aqueduct base food now 3 (was 1), Harappan now 4 ( was 3) - gains ability '25% of production added to city's current production every time a citizen is born'
(CSD) Chancery/Scrivener's Office/Wire Service: removed 'instant production' element - now grant flat yields based on the number of CS friends and allies you have.
Scrivener's Office: +1 Food per Friend, +2 Faith per Ally
Chancery: +1 Gold per Friend, +2 Culture per Ally
Wire Service: +1 Production per Friend, +2 Science per Ally
Circus: removed 1 Happiness, but added 10 turns of WLTKD when completed (Ceilidh Hall retains +1 Happiness element) - buffed culture instant boost by 50
Observatory: dropped mountain requirement, but added 'Scientific Revolution' policy requirement (this is a buff to Rationalism). Dropped base science to +2, but increased Mountain science to 2 per mountain.
Zoo: removed Scientist slot and science. Now grants large sum of Tourism when completed, and forests/jungles provide +1 Tourism (was +1 Gold).
Seaport: now 15% production boost (was 25%)
Museum: now +5 if themed, 1c per 4 (was per 5)
Opera House: gains +3 culture
Broadcast Tower: now 1c per 5 (was per 4), but also increases Tourism by 1 per 5.