section_path: History/Ancient history
section_name: Ancient history
paragraph_text: Ancient history
  
  The area was part of the Roman province of Germania Inferior and was close to the border of the empire, the Upper Germanic-Rhaetian Limes. In 1997, four Roman milestones were discovered at Wateringse Veld. The originals are in the " Museon " museum. The milestones indicate the distance from the nearest Roman city, Forum Hadriani (modern Voorburg), and can be dated to the reign of the emperors Antoninus Pius (138–161; the column is dated 151), Caracalla (211–217), Gordian III (238–244), and Decius (249–251).