People always overlook how much of a hippie Richard Wagner was intellectually. His philosophical stance differs little from that of Neil from The Young Ones. It's a side of Wagner you can't get away from in Tristan und Isolde, with its endless railing against temporal realities and its search for universal oneness - yeah man, oneness.

Museum shows don’t often evoke a sense of smell, but without even trying, this Ballets Russes exhibition has visitors’ nostrils flared. The show is – intentionally – a feast for the eye, and even for the ear, with ballet scores (sometimes rudely overlapping) playing in every room. But smell?

A soundtrack of "Purple Haze", "Hey Joe" and other eternal Jimi Hendrix hits, is currently drifting out of the Snap Gallery along the swanky Piccadilly Arcade in Mayfair. A boutique exhibition space, Snap sits incongruously amongst purveyors of "fine" jewellery and gentlemans’ tailoring and its front windows are transforming the chi-chi mall with Gered Mankowitz’s photographs of the Sixties guitar genius, Hendrix.

Rachel Whiteread is best known for her exploration of space, of presence and absence, of how we look at what is present – and absent – in the textures of our lives. House, her life-sized cast of a house in a derelict street in East London, first brought her to fame, and more recently Untitled (Plinth), her mockingly affectionate take on the empty plinth in Trafalgar Square, a resin-cast replica of the plinth itself, literally shaped a new viewpoint of that absence in the heart of the West End.

Multiple images of silhouetted horses cantering against blank backgrounds in grids of movement are what most people associate with Eadward Muybridge. Made in the late 1880s, they have contributed to his lasting reputation as a pioneer of photography and the moving image. So it is astonishing to discover through Tate Britain’s magnificent exhibition of his life’s work, that horses were only part of a story packed with surprises.

To mark Pope Benedict’s controversial visit to Britain next week, the V&A have mounted an exhibition devoted to four of the 10 tapestries Raphael designed for the Sistine Chapel – the first time they’ve ever been seen in this country. Depicting the Acts of St Peter and St Paul, these bright, vivid works were made to hang on the lower walls of the Vatican’s principal chapel, below the older Michelangelo’s ceiling fresco

Few artists can creep you out like Gregor Schneider. His work is scary and it’s absurd. But even as you giggle nervously when confronted with its less than subtle deployment of shock-horror tactics, a more profound disquiet creeps up on you. Schneider knows how to tap into our visceral fears.