This thesis sets out to research, study and design a mobile, hybrid, performative architecture that can be adapted to different locations on LeBreton Flats, a site in central Ottawa adjacent to the Canadian War Museum. Research will be based on analyses of past theatre traditions, and the current urban design proposals for LeBreton Flats, while considering the heritage and historical context of the site, its landmarks and transportation networks. The proposed ephemeral architecture a space box will accommodate different modes of performance meant to engage with new and existing outdoor performance and gathering spaces, integrated within the redefined landscape. The site is known to have many historical layers and memories recorded by historical, geological, political and social artifacts and documents. These have been researched and recoded in “An Acre of Time”, a book by Phill Jenkins that inspired the conceptual narrative of the seven Acts in this thesis proposal.