If you have a Teleport spell, then you have a way.
You can get them in the Spire, but they are rare.
Once you have one it will show up with your other spells.
It is a one time use spell, like all the rest, and not all buildings can be stored. Any wonder or evolved building will not work.
When you use the Teleport spell a symbol will show over all buildings you can teleport. Select the building you wish to store and click on the confirm button (Check to make sure you have the right building first). then the building will be stored in your summoning section.