In most cases with landscape design I am not a fan of the garden shed. Many clients need the extra storage but hate to look at their 'tuff shed' and so my job is to try and camoflauge it from view. However, when I came across the 'Modern Shed' of www.modern-shed.com I exhaled a huge sigh of relief. Finally, someone is making a shed that is attractive and affordable. I could highlight this instead of hide it!
If you need something a bit more fancy I also love the modernist modules by KitHaus (www.kithaus.com) their pre-engineered units are made of aluminum, glass, and ipe wood. These can be installed in a few days and would be perfect for a small pool/guest house or outdoor office.