My observation hive is outside and portable. It is 2 frame. Deep over deep. Glass both sides. It is covered by a 1? foamboard insulation box to keep the sunlight out and help them manage temperature. When want to observe, close the entrance screen, lift the box off and carry it over to wherever. When done replace it. All maintenance is done outside of course.
The OH starts out late spring with a ripe queen cell, a small patch of brood with half frame of bees and a foundation frame above. End of summer it is moved into a nuc and the rest of the operations for treatments and wintering preps.
It is a summertime only conversation/education piece as folks watch the progress from bees tending a ripe cell to keep it warm and hydrated. Their anxiously shaving of the end of the cell the day before, of an emerging queen the next morning, and the rest of the season through wax building and honey hoarding.