Where does Rosencrantz die?

Hamlet explains to Horatio what happened on his journey to England. He says that he strongly suspected Rosencrantz and Guildenstern of foul play, and so decided to apprehend their letter to England. In the letter he found an order for his death. Hamlet then devised a substitute letter asking for the deaths of Rosencrantz and Guildenstern. They die in England.