Looking back in time at Fort Nisqually in Tacoma gives folks a sense of what they would have been looking through about one hundred and seventy plus years ago. In this case, light entering rooms through glass windows which was a huge luxury. Imagine being snowed in during the winter and looking through these wave and bubble covered panes for weeks on end. We have it embarrassingly easy in this day and age don't you think? What invention are you most grateful for?