"THE concept of displaying and preserving plants as botanical treasures is as old as civilization itself. After all, the Hanging Gardens of Babylon were one of the wonders of the ancient world.
The Greeks, Egyptians, Chinese and Japanese were also ancient exhibitors of plants, although it was the Romans who developed this predilection into a science with their cultivation of exotic foliage brought from conquered corners of the empire.
However, the historical development of conservatories is also unavoidably connected to the progress made in the manufacture of flat glass.
There is some evidence that the ancient Romans first attempted to construct buildings that let in light but kept out cold, making use of sheets of mica in place of glass. They, unfortunately, fell with the Roman Empire. "