All over the world, KLM's famous Delft Blue houses are seen as icons of the Netherlands. They are replicas of really existing houses. Together, the 93 houses and collectors' items form a quirky overview of 500 years of Dutch Design. The best anecdotes and tall tales have been collected about life behind these facades. Almost too good to be true, but true. About the bosom friends of William of Orange, the sales tricks of Rembrandt, the bed of Mata Hari, a gold treasure in the garden and human fat as a panacea. And on the wall of one of the houses is also a code that is almost impossible to crack. In short, highlights of Dutch history and architecture, in royal Delft blue.