Ruin value
Ruin value () is the concept that a building be designed in such a way that if it eventually collapsed, it would leave behind aesthetically pleasing ruins that would last far longer without any maintenance at all. The idea was pioneered by German architect Albert Speer while planning for the 1936 Summer Olympics and published as "The Theory of Ruin Value" ("Die Ruinenwerttheorie"), although he was not its original inventor. The intention did not stretch only to the eventual collapse of the buildings, but rather assumed such buildings were inherently better designed and more imposing during their period of  use. The idea was supported by Adolf Hitler, who planned for such ruins to be a symbol of the greatness of the Third Reich, just as Ancient Greek and Roman ruins were symbolic of those civilisations. Albert Speer. In his memoirs, Albert Speer claimed to have invented the idea, which he referred to as the theory of Ruin Value (Gr. "Ruinenwerttheorie"). It was supposedly an extension of Gottfried Semper's views about using "natural" materials and the avoidance of iron girders. In reality it was a much older concept, even becoming a Europe-wide Romantic fascination at one point. Predecessors  include a "new ruined castle" built by the Landgraf of Hesse-Kassel in the 18th century, and the designs for the Bank of England built in the 19th century produced by Sir John Soane. When he presented the bank's governors with three oil sketches of the planned building one of them depicted it when it would be new, another when it would be weathered, and a third what its ruins would look like a thousand years onward. Speer's memoirs reveal Hitler's thoughts about Nazi state architecture in relation to Roman imperial architecture: Hitler accordingly approved Speer's  recommendation that, in order to provide a "bridge to tradition" to future generations, modern "anonymous" materials such as steel girders and ferroconcrete should be avoided in the construction of monumental party buildings wherever possible, since such materials would not produce aesthetically acceptable ruins. Thus, the most politically significant buildings of the Reich were intended, to some extent, even after falling into ruins after thousands of years, to resemble their Roman models. Speer expressed his views on the matter in the Four Year Plan of 1937 in his contribution "Stone Not Iron" in which he published a photograph of the Parthenon  with the subscript: "The stone buildings of antiquity demonstrate in their condition today the permanence of natural building materials." Later, after saying modern buildings rarely last more than fifty years, he continues: "The ages-old stone buildings of the Egyptians and the Romans still stand today as powerful architectural proofs of the past of great nations, buildings which are often ruins only because man's lust for destruction has made them such." Hitler approved Speer's "Law of Ruin Value" (Gr. "Ruinengesetz") after Speer had shown him a sketch of the Haupttribüne as an ivy-covered ruin. The drawing pleased  Hitler but scandalised his entourage. However, due to the onset of the Second World War, Nazi German architecture made extensive use of concrete. Modern planned ruins. A more modern example of intended ruins were the planned warning signs for the proposed nuclear waste repository at Yucca Mountain (see Human Interference Task Force), which were intended to endure for 10,000 years, and yet still convey an enduring (if negative) impression on future generations: "Keep out. Don't dig here." Architect Charles Jencks mentions "Ruins in the Garden", a section of the Neue Staatsgalerie, as a postmodern subversion of ruin value. Ruin