NASA wants to take you on a mission to Mars. No, not that NASA -- the other one based out of the lower Manhattan studio of artist Tom Sachs. His installation, "Space Program: Mars," opened at the 55,000 square-foot drill hall of the Park Avenue Armory on Wednesday.

Japanese artist Yoshitomo Nara's and his Japanese collaborators are working on an installation that will open September 9 at the Asia Society, and right now fans are flocking to the Park Avenue Armory to see the artist at work.

Pratima Naithani's moving installation, The Sweet Shop, rolls into town as part of the art fair. Watch the video.

There's nothing like debating the nuances of a show beneath the moldering head of a taxidermied wolverine.

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