IRO at Opium, located at 26 Wexford Street, Dublin 2, Ireland, is a prominent fixture in the city's dynamic nightlife scene. This multi-faceted venue, known for its sophisticated fusion of nightclub, restaurant, and lounge experiences, has steadily built a reputation as a vibrant cultural hub since its inception. The building that now houses Opium has seen various incarnations over the decades, originally serving as a storied social venue before undergoing a major refurbishment.

This transformation ushered in a modern, Asian-themed aesthetic with state-of-the-art sound and lighting systems, creating a distinctive space that stands out amid Dublin’s competitive nightlife circuit. The IRO nightclub, nestled within Opium’s upper floors, has become particularly well-known for hosting a diverse array of electronic music events, from deep house and techno to hip hop and funk. Over the years, IRO and Opium have actively shaped Dublin's clubbing culture by providing a platform for emerging local talent and serving as a regular haunt for music lovers in search of innovative programming and immersive party experiences.

While Opium’s core location on Wexford Street has remained stable, the venue continually evolves its layout and offerings, adapting its multiple floors—with themed bars, dance rooms, and rooftop gardens—to fit the shifting demands of its eclectic clientele. This adaptability has cemented IRO’s reputation as a dynamic and influential force within the capital’s nightlife landscape. Notable artists who have performed at IRO and Opium include international acts like Honey Dijon, Moodymann, Mall Grab, and Detroit Swindle, as well as celebrated Irish DJs and producers such as KETTAMA, Boots & Kats, and Claire Beck.

The venue has also hosted a wide range of themed nights, live performances, and pop-up sets featuring both established and up-and-coming talent from across the electronic music spectrum.