In this week's episode, Ben Luke learns about Giotto’s revitalised depictions of the life of St Francis of Assisi in the Basilica of Santa Croce, speaks to the curator of the 18th edition of the Biennale de Lyon, and explores a painting by surrealist Remedios Varo on view in a major retrospective at the Louisiana Museum in Denmark

Works by more than 200 artists are on show across French city, in sites that range from Renaissance courtyards to a former household appliance factory

As the largest edition of the biennial expands into an abandoned factory, we also roundup new festivals sprouting up around the world