This holiday season, swing by London’s Tate Modern for some Robert Rauschenberg, a dose of Modernist photography and… a very merry winter wonderland. The beloved Christmas Market is back, and it returns to the museum grounds for the third year in a row. There’s a Victorian Carousel and a Christmas Grotto with an in-house Santa for the kids; meanwhile, adults can indulge in a toasty glass of glühwein (German mulled wine) and, of course, great outdoor shopping under twinkling Yuletide lights.