Tying a rope is one of the most practical skills to have in your arsenal, and 99 percent of the time, a bowline is the best knot for the job. Not only does it offer a rock solid hold, it can be tied and untied in seconds, even after bearing tension.
Sky Garden House by Guz Architects. Wierd, but I think it would be really nice to inhabit. It's also an interesting application of green roofs/roof gardens to a very modern, otherwise steel and concrete design.