My recommended openings for the next few days, all in Chelsea:

Today (Thursday):

Stuart Hawkins at LFL Gallery
Paper Chase (group show curated by Renee Riccardo/Arena) at Axel Raben

Friday:

Joe Ovelman at 5BE Gallery

Saturday:

David Humphrey at Brent Sikkema

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Also, the Skyscraper Museum is now open in Battery Park City, in the Ritz-Carlton hotel.