In Jainism, every Tirthankar who attains Kevala Jnana has his own Samavasarana (divine preaching hall). Therefore, for the 24 Tirthankaras of the present half-cycle, there are 24 Samavasaranas — one for each Tirthankar. This is a universal feature across traditions; details of how the Samavasarana is pictured can vary, but the basic fact remains the same. You can read more about Samavasarana here and about the 24 Tirthankaras here . ( jainknowledge.com)