Start the game next to the unusual generation: a mansion with a built-in outpost awaits you right on the spawn. It is located right in one of the rooms, and looters spawn both inside the house and outside. Also, the mansion is interesting because it stands right in the middle of the canyon. In less than 100 blocks, a portal to the Nether underground can be found.
How to use Mansion with a Built-in Outpost seed
Start the Singleplayer mode
Select ‘Create New World’
Then click on ‘More World Options…’
In the ‘Seed for the World generation’ field, enter -7659020764548910405