Construction on the first phase of the Space Needle's Century Project will be complete in May of 2018. When the project is done, the 55-year-old landmark will feature the first ever rotating restaurant with a glass floor.
“It’ll just be you and the view,” said Karen Olson, chief marketing officer for the Space Needle.
So, what's the most difficult obstacle so far?
"The biggest thing is planning," Olson said. "We’re only a five story building, we just happen to be 500 feet in the air. We’re honoring the structure, the legacy of it. It’s like 3-D chess."