PlayGround

Plateau

On the plateau you can build Wonder buildings that will inspire your villagers and increasing production.
Each wonder building gives different permanent bonus.
Only one wonder building can be built per run. To build another, you must abdicate.
In addition to bonus wonder buildings allow for abdication granting Royal points.

Wonder Effect Royal Points granted
Stonehenge +20% to workshops, +10% to manufacturers and kitchens 20
Pyramid +10% to construction and deconstruction 20
Underground city +15% pit mine, deep mine, geologist and quarry 20
Sacred Grove +10% to forester, loggers hut, hunter lodge and gatherer20
Hanging garden +15% to farms 20
Colossus +15% to attack power and defense power to all troops 20
Great lighthouse +20% to boat builder, +10% to shipyard and +10% attack power of boat, brigantine and galleon20

After all above wonder buildings have been built final wonder is unlocked that allow for ascension. This final wonder is called Ascension temple, which provides 50 royal points.

All wonders can use up to 5 workers, demanding a lot of time to be built, and needing many resources to be putin, in order, as follows:

Stonehenge Pyramid Hanging garden Colossus Underground city Sacred Grove Great lighthouse Ascension temple
to 10% 10:Hammers/Pickaxes/Shovels to 10% 10:Hammers/Pickaxes/Shovels to 10% 10:Hammers/Axes/Shovels to 10% 10:Hammers/Pickaxes/Shovels to 10% 10:Hammers/Pickaxes/Shovels to 10% 10:Hammers/Pickaxes/Shovels to 10% 10:Hammers/Pickaxes/Shovels to 5% 10:Hammers/Pickaxes/Shovels
to 20% 50:Logs/Planks to 20% 50:Cut stones to 20% 100:Logs, 50:Planks to 20% 100:Logs, 50:Planks to 20% 100:Log to 20% 100:Berry/Mushroom to 20% 100:Logs, 50:Planks to 10% 100:Logs/Planks
to 30% 50:Logs/Planks to 30% 50:Logs/Planks to 30% 75:Berry/Mushroom to 30% 75:Stones/Cut stones to 30% 20:Hammers/Pickaxes/Shovels to 30% 20:Chickens 10:Horse/Pigs to 30% 100:Cut stones to 20% 100:Cut stones/Planks
to 40% 100:Stones to 40% 100:Cut stones to 40% 20:Shovel to 40% 100:Logs, 50:Planks to 40% 100:Logs to 40% 200:Berry/Mushroom to 40% 100:Logs, 50:Planks to 25% 50:Copper/Iron/Steel
to 50% 100:Cut stones to 50% 50:Logs/Planks to 50% 100:Wheat to 50% 75:Stones/Cut stones to 50% 20:Hammers/Pickaxes/Shovels to 50% 100:Berry/Mushroom to 50% 100:Cut stones to 30% 50:Gold/Silver
to 60% 100:Stones to 60% 100:Cut stones to 60% 100:Barley to 60% 100:Logs, 50:Planks to 60% 100 Logs to 60% 20:Chickens, 10:Horse/Pigs to 60% 100:Logs, 50:Planks to 40% 100:Cut stones/Planks
to 70% 100:Cut stones to 70% 50:Logs/Planks to 70% 100:Apple to 70% 75:Stones/Cut stones to 70% 20:Hammers/Pickaxes/Shovels to 70% 100:Berry/Mushroom to 70% 100:Cut stones to 45% 50:Copper/Iron/Steel
to 80% 50:Logs/Planks to 75% 100:Cut stones to 80% 100:Hop to 80% 100:Logs, 50:Planks to 80% 100:Logs to 80% 20:Chickens, 10:Horse/Pigs to 80% 100:Logs, 50:Planks to 50% 50:Gold/Silver
to 90% 100:Stones to 80% 100:Cut stones to 90% 100:Cotton to 90% 75:Stones/Cut stones to 90% 20:Hammers/Pickaxes/Shovels to 90% 100:Berry/Mushroom to 90% 100:Cut stones to 60% 100:Cut stones/Planks
to 100% 100:Cut stones to 90% 50:Logs/Planks to 100% 100:Grapes to 100% 100 Copper, 20:Hammers to 100% 50:Logs/Cut stones to 100% 200:Berry/Mushroom to 100% 100:Planks to 65% 50:Copper/Iron/Steel
- to 95% 100:Cut stones - - - - - to 70% 50:Gold/Silver
- to 100% 100:Cut stones - - - - - to 80% 100:Cut stones/Planks
- - - - - - - to 85% 50:Copper/Iron/Steel
- - - - - - - to 90% 50:Gold/Silver
- - - - - - - to 100% 100:Gold/Silver

Thanks to Pezet91, who wrote this guide.