Among the dozens of contemporary art expos on the global fair circuit, The September Art Fair at The Bridge—which just completed its second edition last weekend—stands out for a number of reasons. To start, it’s an outdoor art fair free from the confines of the exhibition center, with blue-chip galleries hanging works in storage containers, jerry-rigged to provide ample lighting. And it’s not just any outdoor location: It’s held on the sand dunes of a golf course with a one-time $1 million membership fee and annual dues and taxes that top $80,000 per year, a location that makes it impossible to detect from the surrounding roads. And unlike other art fairs, the public cannot buy tickets—attendance is by invitation only.