Stop what you're doing and take a minute to think about all of your favorite San Francisco landmarks. Sure, City Hall and the Golden Gate Bridge may top the list but don't leave out the wacky building on the corner of Sixth and sketchy known as Defenstration. Love it or hate it, we all know the blighted Hugo Hotel turned public art installation on the corner of Sixth and Howard and our city just wouldn't feel the same without it. But the furniture-clad building won't stay frozen in time without a little TLC. And that's where you come in.