Celebrating its twentieth anniversary as a concert space under the Fillmore name, Live Nation's mid-sized Colfax Avenue auditorium — once a skating rink and an electric-car factory — received a stunning upgrade. The Fillmore's wide-open space was graced with three new elevated tiers of seating, creating vastly improved sightlines to the stage. Upgrades to the sound system deliver bright acoustics to every seat in the house, and added doors have created a smoother entrance and exit for the crowds. The most crucial improvement — which came after years of complaints about endless lines — is the addition of more restrooms, so concert-goers can spend less time doing the pee-pee dance and more time enjoying the show.