What is Tivoli? What did the Germans do to it?

Tivoli Gardens was similar to what we know as an amusement park. It was closed by the Germans, and a large portion was burned down.

"Silly," Annemarie scoffed. "You never saw the fireworks." Tivoli Gardens was closed now. The German occupation forces had burned part of it, perhaps as a way of punishing the fun-loving Danes for their lighthearted pleasures.