Enter through a small storefront, walk past the freezer, flip a light switch — and descend into a dim, sci-fi-inspired room of glowing panels, neon accents, and space-age decor that feels transported from a 1980s vision of the future. Retrograde at 530 E. 19th Avenue has been one of Denver's most atmospheric bars since its opening, with a cocktail programme that matches the commitment to aesthetic — seasonal menus, house-made ingredients, and a bartending team that treats the compact space like a stage. The room seats fewer than thirty, maintaining an intimacy that larger venues cannot replicate. Open seven nights a week, which is unusual for a bar this small. A bar where the experience begins before you reach the counter.