Fort St. Pieter Maastricht Underground Step back to times of siege in Maastricht as you explore Fort Sint Pieter with a guide. Find out why this old fort was built in the 18th cen From €9.95
North Caves Maastricht Underground Plumb the depths of Maastricht's North Caves and discover a vast underground labyrinth. In pitch black darkness, with exactly zero bars of p From €9.95