X bracing for lateral stability is simple and exposed; nothing is hidden here. There originally may not have been enough; according to the Fort Myers News Press:
Once the project was complete, Walker climbed up on the roof, moved from side to side and felt the house move ever so slightly with him. "He said, 'Paul, we need some braces,'" Elaine Walker recalled.
Rudolph installed steel guy wires that criss-cross the slender beams that are the house's framework.
Credit: Lloyd Alter