Stadtpuls is an open data platform for Internet of Things projects in Berlin that supports the collection and visualization of sensor data and makes it available for further data analysis. This data helps to dive deeper into the world of urban sensor technology and to better understand one’s own city, thereby answering questions such as: “How loud is it in my street? What is the CO2 level in my classroom? What is the particulate matter level outside my front door?”. Stadtpuls offers the sensor data freely and brings together Makers such as municipal companies, school projects, researchers, hobbyists and users such as data scientists, data journalists, scientists.