Think about where you want your glass gazebo to be. The glass pavilion does not necessarily have to be free-standing in the garden, but can also be attached directly to the house and thus become a kind of winter garden.
Keep in mind that the glass pavilion comes into its own best when it is placed in the middle of the garden. As the glass gazebo gives a 360 degree view of your garden from inside, you will therefore get the most benefit if the glass gazebo is not placed directly against a wall.