This paper presents the design and development of a biomimicry-inspired photobioreactor (PBR) aimed at optimizing algae cultivation for sustainable urban applications. By closely mimicking natural systems, the proposed PBR design incorporates an omni-directional apparatus that replicates natural fluid dynamics to enhance air bubble distribution and algae growth efficiency. This bio-inspired approach significantly increases biomass yield, particularly by facilitating growth and reducing the need for traditional tank drainage and filtration. Comparative growth experiments demonstrate the apparatus’s ability to improve algae proliferation, simplifying harvesting processes and reducing operational costs. This approach offers a scalable, cost-effective solution for incorporating algae cultivation into urban architecture. The paper concludes with insights into the performance of the biomimetic design, its potential for large-scale applications, and the opportunities and risks for further development.