It’s hard to believe, but the Guggenheim Bilbao just turned 25 this October. The building that embodied a new architectural paradigm, that helped change the face of its rustbelt host city—the now much sought-after “Bilbao effect”—and that made Frank Gehry a household name, still appears remarkably fresh today, bar a couple of dated interior-design decisions (the '90s really were the age of beige as beige stone and similarly-colored veneer covers much of the museum). To mark the anniversary, a gala dinner was held in Gehry’s presence, and a special performance, Dance of the Mutating Materialities, put on for museum members by Argentine artist and choreographer Cecilia Bengolea. Alongside giant screens showing archive footage of the building’s construction, enhanced with dancing digital avatars shaking their thing on the swinging steel I-beams (each one represented a material—alabaster, titanium, etc.), she got the soaring main atrium boogying to the soundtrack of DJ Pappi’s Jamaican beats, a way of “recomposing institutional visual narratives” and “eroding the divisions between bodies, materials, artworks, the museum, dance, and partying,” according to curator Maite Borjabad López-Pastor, who commissioned the piece.