Tent and a View
Here is an interesting tent from 1891. In fair weather the side can be opened up, and when it is raining the side rolls down for full protection. This idea is pretty similar to some modern ultralight tents, like the Tarptent tent shown below which has a side that opens, or that can be closed by rolling down the flaps and zipping them together to form an enclosed threshold. This tent is by Tarptent, which has a number of models that look very light and innovative.