Getty Museum

Part of the Getty Center in Brentwood, the J Paul Getty Museum tells the story of pre-20th-century Western art, from illuminated medieval manuscripts to Van Gogh’s Irises. You can also browse antiquities at the Roman-style Villa Getty in Malibu, about an hour from Los Angeles’ hotels by public transport.

Tate Modern

International modern art from the past 100 years fills the austere white galleries and cavernous halls of Tate Modern, a former power station on London’s South Bank. Temporary exhibitions are held on Level 4 but visitors flock all year round to see works by Dalí, Picasso and Rothko, while specially commissioned exhibits fill the Turbine Hall’s five-storey atrium.