netherlands, groningen, martinitoren travel landmark

vector illustration landmark holland dutch culture northern netherlands university city cathedral landmarks tourist attractions belfry tallest towers historic center brick buildings student life museums windmills canals history cycling traditional architecture shopping cafes nightlife festivals art galleries tours european union monarchy cultural heritage hanseatic league church bells marketplace midsummer festival churches hortus haren botanic garden beautiful library language international community day trips food and drink musical performances historical events festive atmosphere ruins of science