The talk the other night was hosted in this house:

amazing ceiling

which had the most incredible ceiling I have ever seen in my life. Those are two-by-fours laid side by side, narrow edge down! Some of those boards are around 20 feet long!
Being a long time activist for the preservation of old-growth forests, as well as having a deep personal interest in architecture and building, I was awestruck by pure volume of lumber and the length of some of those timbers. The entire house is beautifully constructed, the ceilings curve around rounded windows and porticos, the spaces, from one room to the next, flow into each other over many different levels. The attention to detail is exquisite. It was a real treat, just to look around.

so much lumber in their crazy ceiling