Travel
Rail route of the month: Barcelona to Cádiz, the slow train right across Spain

Two long-distance trains leave Barcelona Sants station just after nine each morning. There’s the French TGV to Paris, 668 miles and almost seven hours to the north. The other train, much the more interesting of the two, is the 09.05 to Cádiz, a journey of 12 hours, covering 800 miles. This is one …