If all you have ever seen in the traditional diamond framed bicycle, then what I'm attempting is going to look a little odd. Rather than your feet below you, the pedals are in front.
|Recumbent trike. Source: Wikipedia.|
Mrs Gerbil and I took a couple of recumbent trikes, similar to the one pictured (minus windscreen) for a run the other week. It's amazing fun cycling along with your backside inches from the ground. I'm planning something two wheeled.
Have a look here for the bike I am attempting to replicate.
Or go have a look at Wikipedia to find out exactly why you are riding a diamond shaped bike.