Fort 't Hemeltje dates from 1877-1881 and is the last built fort of the New Dutch Waterline. It defended a strip of land that could not be flooded and the 's-Hertogenbosch-Utrecht railway line. Nowadays, Fort bij 't Hemeltje is largely used as office space for various entrepreneurs who are active in the field of sustainability. The fort also offers shelter to (breeding) birds and bats.
There is a walking route around the fort and there is an exciting spy route with fun assignments for children. In addition, the fort is regularly open to the public, for example during Open Heritage Days.