Dave Cabrera Photo

A tradition since 2000, the annual summer pavilion at London's Serpentine Galleries opened today. This year's pavilion is designed by José Selgas and Lucía Cano of Madrid-based SelgasCano, and is by far the most colorful of the summertime installations yet. The 1,927-square-foot pavilion will be open through October 18.

As The Guardian's Oliver Wainwright pointed out earlier this week, this curvy rainbow structure is an "Instagrammer's paradise." Judging by the influx of 'grams under #serpentine and #serpentinepavilion, I'd say he was right.