Architecture facts

Annabeth kept talking about structural supports, and how she would’ve made the windows bigger, and designed a see-through floor.

Hoover Dam,” Thalia said. “It’s huge.”
Seven hundred feet tall,” I said. “Built in the 1930s.”
“Five million cubic acres of water,” Thalia said.
Grover sighed. “Largest construction project in the United States.” Zoë stared at us. “How do you know all that?”
“Annabeth,” I said. “She liked architecture.”
“She was nuts about monuments,” Thalia said.
“Spouted facts all the time.” Grover sniffled.