The birthplace of Lord Mahavira, the 24th Tirthankara in Jainism, has been a subject of some debate among historians and scholars. There are two primary locations that are often cited:

1. Vaishali (modern-day Basarh, Bihar): Many traditional Jain texts and sources, including the Kalpa Sūtra, assert that Lord Mahavira was born in Kundagrama, a suburb of Vaishali. This region is in the present-day Bihar state of India and is widely accepted by the majority of Jain communities.

2. Kundalpur (near Nalanda, Bihar): Some scholars and local traditions argue that Lord Mahavira was born in a place called Kundalpur, near Nalanda in Bihar. This is based on interpretations of certain texts and archaeological findings, though this view is less widely accepted compared to Vaishali.

Among these two, the more widely accepted and traditionally endorsed location is Vaishali (Kundagrama). This site has strong backing from historical Jain texts and the majority of the Jain community. However, the debate continues due to varying interpretations of historical evidence and local traditions.