Oásis Biosistema

Oásis Biosistema is a Portuguese landscaping and ecological design company founded in January 2022 by Alberto Tassi, headquartered in the Lisbon/Palmela area. Inspired by the ancient concept of the garden as an oasis — a place of shade, freshness, and reconnection with nature — the company specialises in creating bespoke outdoor environments that integrate seamlessly with the surrounding ecosystem. The company's core services encompass three main areas: ornamental lakes, natural swimming pools (Oásis Pond), and sustainable landscaping (Oásis Garden). All projects are designed without chemical interventions; instead, biological balance is achieved through the use of aquatic plants and fish, supporting local biodiversity while maintaining visual elegance. The natural pools and ornamental lakes serve as functional living ecosystems rather than conventional treated water features. Oásis Garden focuses on regenerative, low-maintenance garden design tailored to the Portuguese climate, always prioritising harmony with the local ecosystem. Beyond landscaping, the company also integrates outdoor wellness experiences — including saunas, jacuzzis, and tranquil wellness gardens — creating private retreats that encourage relaxation and reconnection with the natural world. Founded under the philosophy of designing with nature rather than against it, Oásis Biosistema demonstrates that luxury and sustainability are not mutually exclusive. Each project is developed in close collaboration with clients to reflect their unique vision while maintaining ecological integrity. The company holds a construction licence (Alvará IMPIC nº 107069-PAR) and has built a substantial following of over 25,000 on Facebook, reflecting strong community interest in ecological outdoor design across Portugal.