Alterno Chambers

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Alterno Chambers

Erofest has joined forces with the HellEvents crew to prepare a special BDSM zone for this year’s edition: “Alterno Chambers.” This unique space offers a rare glimpse into the world of the renowned Alterno parties organized by the HellEvents crew.

Leave your inhibitions behind and step into a realm of intimacy, sexuality, BDSM, and fetish. And who knows—this might be just the beginning. As a natural follow-up to this zone, HellEvents invites you to Alterno: Vanilla 2026, taking place just two weeks after Erofest, on April 24, 2026, at Trezor Club.

Alterno: Vanilla is the perfect entry point for curious newcomers and less experienced guests. In addition to fully equipped BDSM furniture, play arenas, and a DJ-driven dance floor, the event includes trained animators who are there to guide you—showing you how to use the equipment, introducing individual practices, and clearly explaining safety, consent, and boundaries. The dress code is intentionally more welcoming. Alongside the classic strict fetish dress code, an all-black option is allowed for this night (no streetwear), making it easier to step into the atmosphere while still respecting the spirit of the event.

And if your visit to Alterno Chambers at Erofest awakens a deeper curiosity—and you feel that vanilla might not be enough—you can move straight on to the more intense experience: Alterno: Sci-Fi on April 25, 2026. Or go all in and attend both events for a truly heated weekend with the organizers behind the largest BDSM and fetish events in the Czech scene, hosted at Trezor Club.

During the 15-minute tours you will have the opportunity to:

Put on a mask at the entrance to protect your anonymity. The mask is included in the ticket price.
Peek into intimate corners with performers who will show you that intimacy doesn’t have to begin and end under a bedroom duvet.
Meet professionals from the scene and talk openly with them about anything that interests you within this world.
Watch curated video projections featuring highlights from HellEvents productions — performances, showcases, and teasers for upcoming events.
Try out BDSM furniture that most people don’t have at home — with hands-on assistance from the HellEvents crew.
Enjoy a short introductory session led by a professional dominatrix or dominant from the HellEvents crew.
Experience the one-of-a-kind atmosphere of the BDSM and fetish world.
Discover themed spaces designed exclusively for this event.
Let yourself be inspired, embrace your fantasies, or find the confidence to attend one of the HellEvents productions.
Get a behind-the-scenes look into the world of BDSM and fetish, brought to life by HellEvents.

Rules for entry:

Age 18+
No photography allowed
Strict adherence to SSC principles (Safe, Sane, Consensual)
No touching of performers without their explicit consent
Zero tolerance for any form of hate speech, including homophobia, xenophobia, transphobia, racism, or similar behavior.
No weapons, alcohol, or drugs are permitted on the premises.

By purchasing a ticket, you agree to comply with these rules. Any violation may result in removal from the zone without entitlement to a ticket refund.

Tours will take place at the following times:

Friday: 16:00–17:30 and 20:00–21:30 (Admission: 300 CZK in presale, 400 CZK at the door)
Saturday: 16:00–17:30 and 20:00–21:30 (Admission: 400 CZK in presale, 500 CZK at the door)
Each tour lasts approximately 15 minutes, with time slots available for reservation every 20 minutes.

Admission to the “Alterno Chambers” zone is ticketed separately and is not included in the standard Erofest entry. Capacity is limited, so early reservation is strongly recommended.

If you’d like to explore more events by HellEvents, visit www.hellevents.cz, www.fetishweekend.cz, or check out their Instagram profiles @helleventscz and @rope.spirit.