Places at which avtars of lord thought spiritual lesson to the people during their time , slept , done miracle or leela, this sacrosanct place is called as sthan. Tirtha sthana holds a special significance either because it is associated with a religious event. As magnate is surrounded by magnetic field just like that tirth sthan radiate some kind moral energy (tarang) that lifts the mind out from all attachments of its limited function, you can find yourself in confinement with lord not felt elsewhere.
Tirth sthans are abode of god.
