Wiktionary
mandapa
n. 1 (context in south India architecture English) A pillared hall or porch fronting a Hindu temple. It may be attached or detached from the building. 2 (cx South Asia English) A temporary platform or sacred tent used for a wedding or other religious ceremony.
Wikipedia
Mandapa
A mandapa (, , ; also spelled mantapa or mandapam) in Indian architecture is a pillared outdoor hall or pavilion for public rituals.