Adding the Global Seed Vault as an existing wonder in Longyearbyen would, however, better reflect this town's important function as a centre of research, especially ecologic, climatic and paleontologic reasearch.
Some future world wonder suggestions:
The Rotating Tower
+2

-50 %

caused by population
+2

with Grass-roots civic
+6

, +2

(great scientist)
Habitat 2020
-25 %

caused by population in all cities
+2

with Grass-roots civic
+4

, +2

(great scientist)
California Academy of Sciences museum
+2

in all cities
+1

in all cities
+2

with Grass-roots civic
+6

, +2

(great scientist)
Green City (not a good name for this wonder, any suggestions?)
+2

with Grass-roots civic
No

in this city
+2

(great scientist)
Teatro del Agua
+4

in all cities
+1

+2

with Grass-roots civic
+8

, +2

(great artist)
http://www.madarchitect.org/green-buildings/the-most-sustainable-development-in-australia-frasers-broadway/#more-151]Fraser's Broadway
+40 %

+3

+4

, +2

(great merchant)
Russia Tower
+50 %

+2 trade routes
+4

, +2

(great merchant)
Most such future building projects seems to have a focus at ecology/commerce. Perhaps we in some way should add even more sickness to this mod, as several future techs and wonders have a focus at increased health and otherwise would be become pretty much useless? Also, if anyone have any suggestions to other bonuses for these wonders, I would be most thankful, as it's pretty hard to come up with ideas not focusing too much on environment/healthiness. And which wonders should require which technologies?