fronten park in maastricht is an 18th century fortification area with remains of the defense works

18th active ancient architecture area background beautiful been blue building camargue century color colorful defense environment europe floral fortification fronten frontenpark fronts garden grass green harbour have heritage historical lage landmark landscape low maastricht medieval natural nature old outdoor park plant preservation public recently region relaxation remains restored river ruin silence sky stone summer texture the tourism travel tree view walking wall water which works