Window

Choose one surface within range. In a one foot by one foot area, the present material is replaced with a pane of glass until the spell ends. The glass pane can only be seen through one side, decided by the caster. The other side of the spell looks the same as it did before the casting. As an action, a creature can discern the presence of the spell if they succeed in a Wisdom (Perception) check against your spell save DC.

The spell can penetrate most materials, but is blocked by 1 foot of stone, 1 inch of common metal, a thin sheet of lead, or 3 feet of wood or dirt.