It might sound a bit absurd to talk of a $ 1billion mega structure at a time when the housing industry is hurting and builders are more focused on survival. However, a model of the winning design for the new U.S. Embassy for London is a special case and is sure to receive considerable worldwide attention, both for the exceptional design as well as for the overall spending on the project. Designed by the Philadelphia-based firm KieranTimberlake, the embassy concept proposed to be constructed in 500,000 square feet, features lofted halls and beaming “light art” along with an energy-efficient, carbon-neutral, self-sufficient work of art in an urban park setup complete with ponds and pleasant sculptures. Appearing more like a crystal fortress, the new U.S. Embassy would be the most expensive embassy ever built, overshadowing the $700 million sprawling compound in Iraq and $850 million embassy projected for Pakistan. Set aside your anxiety, because we will only see the groundbreaking new embassy somewhere between 2013 and 2017.