Frédéric Chopin:

In April, during the Revolution of 1848 in Paris, he left for London, where he performed at several concerts and at numerous receptions in great houses. This tour was suggested to him by his Scottish pupil Jane Stirling and her elder sister. Stirling also made all the logistical arrangements and provided much of the necessary funding.

Please answer a question about this article. If the question is unanswerable, say "unanswerable". Where did Chopin go in the spring of 1848?
London