Across Paris, bees and their keepers have been taking advantage of the city's pesticide-free parks, gardens and flowerbeds to produce pricey honey. The otherwise unused rooftops of many Parisian landmarks are now home to hundreds of thousands of bees. The exclusivity of the real estate shows in the cost: The world's most expensive honey – E 15 for 150 grams – comes from the roof of Palais Garnier, the city's grand opera house.
Image: A keeper fumigates the hives atop Saint-Denis. Story via Skyscraper City. Thanks to Wessel de Jong for the tip.