In our perception, Nature is full of wonders and mysteries that need to be discovered and appreciated. Most times, however, even during a nature trip, we forget to use all our senses, we don’t pay attention to all the details, we are in a hurry, or we just don’t know where to look. Well-designed and planned thematic trails are helpful in such situations. Carefully arranged in natural protected areas (but not only), but the thematic trails may also become valuable tools for environmental education, outdoor lessons, or just a simple way to transform an ordinary stroll into an interactive experience. AER has designed several thematic trails in different protected areas of the country. Details of each trail are shown below.