Fodor's Expert Review Suffolk County Vanderbilt Museum and Planetarium
Northport
Observatory
William K. Vanderbilt's 24-room Moroccan-style mansion, called Eagle's Nest, sits on 43 acres and houses collections that Vanderbilt acquired as he traveled throughout the world. Summer brings various theatrical performances to the mansion's courtyard. The adjacent planetarium is one of the best equipped in the nation, with a 60-foot domed Sky Theater. Sky and laser shows are held regularly.