To access Abandoned Park you need the Quadrant installed (Crafted in Architect's Manor from an Astrolabe and the Mould. The Mould is a rewarded after solving the puzzle on this land)
There is also Cactus here - chop all of these you will need them later for the Gardens of Babylon.
Make hedges in the Gazebo and use these to connect the existing hedges on the land. See map below. You need to make 82 straight and 35 corners. Square and curved corners are interchangeable, you can use either.
There is only one quest for this land.
Restore the Gazebo
I see an abandoned park! All clear! Once upon a time this park was designed for his Majesty the King, yet things changed and the construction was cancelled. Now you have a unique opportunity to restore the park and add it to your estate.
Create bushes in the Gazebo x 20
Restore the decorative bush hedge and take your reward.
We've done a great job! It's time to take some rest: let's have a glass of cherry brandy and listen to the birds singing in the amusing park.
Once the hedge is finished you can find underground deposits of Sulfur, Iron & Gold. find and extract these with the help of Compasses and Geologists.
Remember to take all the resources from the land including all the cactus.
Abandoned Park can be colonised.