Among the terraced roses we discovered a miniature vineyard selling dry — and inexpensive — Bohemia Sec sparkling wine, so we were well-oiled as we joined an evening tour of the 16th-century Lobkowicz Palace. Its restored rooms are crowded with Brueghels, Rubens, Canalettos; there’s sheet music by Mozart (a regular visitor) and Beethoven (who dedicated his third, fifth and sixth symphonies to the 7th Prince in thanks for his patronage) on display. We met the current Prince for a drink on the palace balcony. His parents lost the building first to the Nazis and then, having regained it, to the Communists. After the revolution, Lobkowicz, who had lived all his life in America, suddenly found himself in charge. ‘When I first came back, Prague had little for visitors. And awful food. Now, there’s magic round every corner,’ he told us.