Humlebæk

Called "Louisiana" as an ode to the original builder of the site, who had three wives—all called Louise—this waterside complex is one of the most unique places to appreciate modern art and sculpture in the world. The collection is hard to beat—two floors of Giacometti, works by Lichtenstein and Warhol, and the cosmic Yayoi Kusama installation—though the most moving experience is to be had outside in the Sculpture Park. Set against the shore of the Øresund Sound (the sea dividing Denmark from Sweden), dotted among the trees, you'll find the most incredible collection of over sixty sculptures, including works by Alexander Calder, Richard Serra, and Henry Moore. To see these literally larger-than-life sculptures in the outdoor setting most sculpture is made for, is truly spectacular.