For Ādināth Bhagwān (Rishabhdev), when people ask “tap place,” they usually mean:

1. Main tap & moksha place – Aṣṭāpād (Mount Kailāsh area)

- Jain tradition says Bhagwān Ādināth did very intense tapas and finally attained moksha (nirvāṇa) on Aṣṭāpād Parvat, which is traditionally identified with Mount Kailāsh in the Himalayas. - This is considered his primary tap‑sthān and nirvāṇa‑kṣetra by both Digambar and Śvetāmbara traditions. - You can read more here and here

1. Important tap‑related places in his life

- Prayāg (Allahabad/Triveṇī) – Under the Akṣayavaṭ (banyan tree) he took dīkṣā and began very strong tapas as a munirāj. This is remembered as a great tap‑kṣetra of Ādināth. - Hastinapur – Place where, after long fasting and wandering for pure alms, he finally took first āhār (sugarcane juice) from King Śreyans. This is linked with Varṣītap and Akṣay Tritīyā, so many remember it in connection with his tapas.

Summary:

• Main traditional tap & moksha place of Ādināth Bhagwān: Aṣṭāpād Parvat (Mount Kailāsh region).
• Other major tap‑related tirths: Prayāg (Akṣayavaṭ) and Hastinapur (Varṣītap–Akṣay Tritīyā).