Install a structure datapack
A datapack is the no-mod route: the structure file ships inside a zip that the vanilla game can read.
You need operator permission or cheats, and the world must be Java 1.20.1 unless the build page says otherwise.
Install and place
Download the datapack zip from the build page. Do not unzip it unless the page says so.
Open your world folder and put the zip in datapacks/. Single-player worlds live under saves/<world name>/datapacks.
Join the world, run /reload, then run the /place template command shown on the build page. Add coordinates if you do not want the build at your feet.
If /reload reports an unknown function or structure, the datapack is usually in the wrong folder or the world is not Java 1.20.1.
If something does not work
Does /place template overwrite existing blocks?
Yes. It replaces the volume it covers, so clear the area or back up the world first.
Does it work on a multiplayer server?
Install the datapack on the server and run the command as an operator. Players do not need to install anything.
Where is the exact command?
Each build page prints the namespace and command under the WorldEdit / datapack download card.