amsterdam architecture buildings canal city classic Enkhuizen golden age holland home houses Human settlement medieval Netherlands old property reflection river sky tourist town VOC water waterway anchorage Duifken Duijfken Dutch-East-India-Company Dutch-Republic Duyfken exploration harbor harbour historic historical marina maritime masts moored nautical navigation ocean-going port replica rigged rigging ropes sail-boat sailing sailing-vessel sailors sails sea ship small-ship spar spars tied-up transportation travel Vereenigde-Oost-Indische-Compagnie vessel voyages wooden aft hull stern bow bowsprit prow children sail school-group