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