You inscribe a large sigil that prevents creatures from teleporting or shifting between planes within the designated area, even around a large building or monument.
It can only be removed by you, either by casting the spell again, retracing the sigil, or using mass dispel.
Your sigil, glowing and intricate, sprawls across the ground, its lines weaving around the building. The air hums with contained power, the barrier unseen yet unbreakable, anchoring all dimensions in place.