Dit lijkt me zeker geen museum, maar:
"tourism=gallery - An art gallery. Art galleries may sell the works, but this is not the primary purpose. The distinction with art shops may be tricky. Many art shops are named as a "gallery" but are clearly still art shops. Sometimes a place may be very much styled as an art gallery, but private galleries which are primarily funded by selling the works to visitors would still be tagged shop=art. Meanwhile a private gallery with a high turnover of visitors and relatively infrequent sales (expensive art!) would count as a tourism=gallery."
Zie https://wiki.openstreetmap.org/wiki/Tag:shop%3Dart
Eerder shop=art denk ik hier; ik pas het zo aan