To provide a built-up tent having sufficient strengh in outdoor use, while having excellent portability and facilitating assembly.

A built-up tent includes at least four supports 2, a cross beam structure 3 that connects the adjacent supports 2 together, a roof structure 4 that supports an awning, and the awning that covers the roof structure 4 and the cross beam structure 3. Each of both ends of a bent elastic frame 6 is connected to the cross beam structure 3 corresponding to opposed side parts of an approximately quadrangular plane formed of the supports 2 at four corners and the cross beam structure 3. The roof structure 4 is formed of the curved elastic frame 6.