London : Embassies around the world have traditionally been bland in design , and have always given the feeling of a boring building, with state – of – the art security. However,the notion that all embassy buildings around the globe have a boring design remains altered, with the construction of the new American chancery on the Thames River; the cost of building the embassy was estimated to be $1 billion. It is the most expensive emabassy in the world, which is a perfect blend of superior design and security. The soon- to- be opened chancery in London is nothing like the previously constructed American embassies. The Washington Post reports that its design is likely a crystalline cube , without visible walls.