"hiking"=>"yes","map_size"=>"region","map_type"=>"street","information"=>"map"
"board_type"=>"history","description"=>"Fort Penserdijk","information"=>"board"
"opening_hours"=>"Mar-Dec Mo-Sa 10:00-16:00; Jan-Feb Mo-Sa 10:00-14:00; Jan 1 off"
"board_type"=>"history","information"=>"board"
"map_size"=>"city","map_type"=>"street","information"=>"map"
"mtb"=>"yes","hiking"=>"no","map_size"=>"site","map_type"=>"scheme","information"=>"map"
"board_type"=>"history","description"=>"Fort Noorddijk","information"=>"board"