Abstract—Nowadays architectural taste and the knowledge in fields such as architectural theory and practical abilities are not sufficient for being a good designer. Architects keep discovering multidisciplinary skills helpful in creating advanced designs. The use of digital generative design systems in designing becomes more prevalent - for the first time being an architect means not only that one has to design the form and function of the building, an architect must understand the way the buildings live, from the conceptual phase till demolition. One of the most powerful directions in contemporary architecture is generative and parametric design. Thanks to the possibilities granted by computer-aided design, architects canstrive for surprisingly simple, free shaped structures which have not been possible up until this point. Since the XXI century mathematical algorithms have become more architecturally friendly and can be used to design more biomimetic forms. The aim of this paper is to present the newest trends in finding inspirations for the designing of contemporary buildings. Looking at living organisms in search for inspiration is probably most common. In this text we have analyzed pavilions with one shared quality – their small size. Thanks to their size pavilions give the opportunity to focus on particular design problems in terms of specific mathematical solutions, while still being buildable architectural objects. While analyzing Expo pavilions for their innovative construction systems, materials, or technology context, it can be clearly seen that those buildings are no longer just buildings covering the exhibition but are intriguing, mesmerizing and interesting to the public. Pavilions are becoming the showpiece which invite the public to take part in events such as expo. Because of that, every detail designed by architects is essential and makes those ephemerals rare and unique.