From the Musée d’Orsay celebrating 150 years since the birth of Impressionism, to Scotland’s Perth Museum uncovering the origins of the unicorn, there is a delightful smorgasbord of art exhibitions waiting to be explored over the next couple of months. If you’re a little lost on where to start, here’s our handpicked selection of the crème de la crème: ‘Angelica Kauffman’ at Royal Academy of Arts (London, UK)Described by one of her contemporaries as “the most cultivated woman in Europe”, 18th-century Swiss artist Angelica Kauffman is the focus of a major exhibition at the Royal Academy in Londo…