Denver after dark

Decadence Colorado is a two-night electronic New Year festival staged inside the Colorado Convention Center. The 2026 edition runs December 30 and 31, building toward the midnight countdown through a full arena-scale dance programme.

An indoor festival footprint

The venue is a defining part of the experience. Official information describes roughly 400,000 square feet and two arenas, allowing Decadence to deliver a major-festival production while keeping the winter event entirely indoors in central Denver.