Christie's First Open

The famous auction house returns with it's 11th annual First Open, offering post-war and contemporary works with more affordable price tags (estimates range from $500 to $180,000). This year's pieces, which include works by Frank Stella, David Hockney, Andy Warhol and Sol Lewitt, can be viewed free of charge in Christie's galleries. Even if bidding is out of the question, there's no harm in a little window shopping.