the serious tower

Looking at the Chicago skyline, Nicholas asks, "Why does the Serious Tower have a lot of blocks?"

Hyeyoung: "The Sears Tower is made up of a bundle of separate buildings."

Nicolas: "Why is it made up of a bunch of different buildings?"

Greg: "They help make the building super strong."

Sophia: "Why is it called the Serious Tower?"

Nicholas: "Because the people in the building are really serious about everything. And because it's a tower."