Behind us is another successfully organized event: BEST Days of Technology and Natural science (BDTN). BDTN allows students to gain practical knowledge, experience and contacts. On the last BDTN which happened from 12 to 18th December, and had lectures and workshops on energetics, urban mining, data science, shallow geothermal, public speaking, team dynamics, nuclear fusion, food supplements, 3D printing, vacuum insulation panels as well as green technologies. Students were also presented with opportunities to study abroad. As part of the BDTN also a 24h programming competition “Hackathon: Smart Cities Solutions“ happened where the participants looked for solutions for smart cities using FIWARE technology.