New York definitely slows down during the summer but there's still plenty to do and that's especially true of the art scene this season. There are many outstanding group shows -- from closet-size to institutionally large -- worth trekking in the heat for, as well as once-in-a-lifetime public art installations. Here's a short list of must-see summer spectaculars. (Clockwise from top left: "It's Not Your Fault: Art from Iceland," Chirs Burden, My Barbarian, "Who's Afraid of Jasper Johns?" and "What Comes Naturally")

[Performance] My Barbarian: Post-Paradis, Sorry Again
Thurs, July 3 & Fri, July 4, 7:30 p.m. $10.
The New Musuem, 235 Bowery
www.newmuseum.org

[Group Show] "Who's Afraid of Jasper Johns?"
Conceived by Urs Fischer & Gavin Brown
Tony Shafrazi Gallery, 544 W. 26th St., Through July 12.
www.tonyshafrazigallery.com

[Group Show] "What Comes Naturally"
A show about contemporary flowers curated by Glynnis McDaris
Fake Estate, 526 W. 26th St. #502, Through July 12.
www.fakeestate.us

[Group Show] "It's Not Your Fault: Art from Iceland"
Curated by Markús Thór Andrésson
Luhring Augustine, 531 W. 24th St., Through August 8.
www.luhringaugustine.com

[Group Show] "That Was Then... This is Now"
Organized by Alanna Heiss and Neville Wakefield
P.S. 1, 22-25 Jackson Ave., Through September.
www.ps1.org

[Retrospective] "Dali: Painting and Film"
MoMA, 11 W. 53 St., Through Sept. 15.
www.moma.org

[Public Art] "What My Dad Gave Me" by Chris Burden
A 65-foot-tall skyscraper made of toy construction parts
Rockefeller Center, Through July 19.
www.gagosian.com

[Public Art] "New York City Waterfalls" by Olafur Eliasson
At the eastern foot of the Brooklyn Bridge; between Piers 4 and 5 near the Brooklyn Heights Promenade; and on the north shore of Governors Island.
Through Oct. 13, from 7 a.m.-10 p.m
www.olafureliasson.net

[Public Art] "Shallow" by Malcolm McLaren
A series of musical painting, 2007-8
Times Square, Through July 31.
www.creativetime.org/at445