The Plant Nursery is one of the first Village Structures you can unlock. It can be placed in one of 14 designated spots on The Land.
Acre can be found here most sunny days. She can upgrade your Tools if you bring her the right materials.
Unlock Requirements[]
Once you mine one 
Obsidian ore Acre gets the Obsidian Working idea. The unlock requirement is 16,000 
Prosperity as well as 10 Obsidian.
Copper Tools Station Upgrade[]
Once you mine one 
Copper ore Acre gets the Hammering idea. The unlock requirement is 70,000 Prosperity as well as 15 Copper.
Smelting Tools Station Upgrade[]
Once you mine one 
Tin ore Ata gets the Smelting idea. The unlock requirement is 120,000 Prosperity as well as 5 Tin, 5 Copper, 5 
Gold, and 5 
Silver.