We ran across these modern glass circular verandas designed by OpenSun and consider them to be an elegant way of extending various interiors. Not only does their design allow for your new favorite room of the house to be surrounded by floor to ceiling windows, but they also provide ventilation and complete openness whenever their user wishes. This is possible due to a simple, yet ingenious railway system that these circular verandas are based on. Connected to a central pillar, the glass windows can be manually adjusted. You can either open them completely and enjoy the natural surrounding environment, or partially, in order to allow a high amount of fresh air inside. With a bit of imagination, the glass verandas can be placed on any side of the building and are perfect for romantic dining areas or office rooms. Find them practical?