Since you obviously don’t want to be later for your lunch reservation at Le Bernardin, you probably don’t want to range too far away but you almost probably don’t just want to sit around waiting for lunch time. Le Bernardin is right in Midtown, so almost all the attractions in the surrounding area are famous ones that you’ve probably seen. Rockefeller Center, St Patrick’s Cathedral, Radio City Music Hall, the Museum of Modern Art and so on.