Skip Rome’s queues and entrance fees and visit a baroque masterpiece

The Church of St Ignatius of Loyola is an oasis of calm in Rome’s tourist central showcasing wonderful trompe-l’oeil frescoes

JMW Turner’s Stonehenge: ancient stones and bloodthirsty skies

An image steeped in Romanticism, this painting was a commercial failure – but it’s now considered a milestone in the great artist’s career