What is the name of the town with the castle Kirsti talks about after the train ride?

From the text:

"Didn't you love the castle when we went through Helsingør, Ellen? "Kirsti asked. She had been talking about Kronborg Castle ever since they had seen it, sprawling massive and ancient, beside the sea, from the train. "I wish we could have stopped to visit the castle. Kings live there. And queens."