The Hughes H-4 'Hercules':

Inside the crew compartment after walking up a very tight spiral staircase:

Here's about the only part of the plane that really is spruce, parts of the main wing root:

Unique view of the lined up props off the left wing:

Inside the wing, looking toward the outer edge. They had crewmen inside the wing taking readings on its one flight:

And here I am, not only sitting at Hughes' seat, but on the same seat cushion he sat on the one time I got the bird off the ground in 1947!

Talk about an amazing experience...