Limbdi Ajramar Gadi is significant in Jain Dharma as a spiritual seat (gadi/peeth) connected with Acharya Ajramarji Swami and the Limbdi Ajramar sampraday. It is remembered as a place of sadhana, tapasya, gurubhakti, and religious inspiration. Acharya Ajramarji lived in Limbdi for part of his life, was appointed Acharya, and spread the message of Lord Mahavir in many regions. ( jainqq.org)

In simple words, its importance is:

• A revered Jain lineage seat
• Associated with a respected Acharya
• A center for religious gatherings and recitation
• A symbol of Jain discipline and devotion ( jainqq.org)

If you want, I can also explain who Ajramarji Maharaj was in simple Jain terms.