Budhwar Peth is a general term, in the Marathi language, for a locality in the Indian cities. These include cities like Pune, Solapur, Madhavnagar, Karad, Ahmednagar etc. The term Budhwar has derived from the day Wednesday in Marathi.
Map of Budhwar Peth, Pune, Maharashtra 411002
References
Budhwar Peth Wikipedia(Text) CC BY-SA