Here is the full list of all 36 Golden Rails: World’s Fair achievements.
Collect 100 units of iron
Gather 100 units of wood
Collect 100 units of gold
Gather 100 units of food
Complete the Suburbs with 3 stars
Complete the Forest with 3 stars
Complete the City with 3 stars
Complete the Snow with 3 stars
Complete the Rivers with 3 stars
Complete the Plains with 3 stars
Complete the Exhibition with 3 stars
Complete the Collector's Edition with 3 stars
Build a Ferris wheel
Assign 5 tasks at the same time
Gather 10,000 units of food
Gather 10,000 units of wood
Collect 10,000 units of iron
Collect 10,000 units of gold
Load 5,000 units of resources onto trains
Build and repair 100 sections of railway
Extinguish 10 fires
Extinguish 50 fires
Earn 3 stars at a shooting range
Earn 3 stars at 5 shooting ranges
Plant 100 flower gardens
Collect 50 bundles of dynamite
Collect 200 tools
Build 200 houses
Collect 100 coals
Collect 1000 coals
Collect 100 limestones
Collect 1000 limestones
Open 10 stores
Open 30 stores
Find every owl
Complete the construction of the exhibition