This document discusses public investments in Denmark and other European countries. It provides data showing that Denmark's public investments as a percentage of GDP have historically been lower than the EU15 average but have increased in recent years. The document also shows increasing public investments in Denmark from 2012 to 2020 for projects like railroads, public housing, and energy agreements. Finally, it outlines some lessons learned, including questions around whether countries have an infrastructure gap, if projects are profitable, how projects can be financed, and if infrastructure investments can support economic growth.