1. The Nightmare Realm
@ The Nightmare Realm on Various dates from Thursday 1st October 2026
- Location: The Gatehouse to Avery Hill, Bexley Road, London, SE9 2PQ
- When: 9th October - 1st November, 6.30pm - 9pm (last entry)
- Price: from £34 per person
- Why we recommend: famous for movie-quality sets, realistic special effects, and intense performances by scare actors, it delivers a deeply theatrical, immersive experience
After 17 years of spooking audiences in Ireland and racking up international accolades, The Nightmare Realm makes its London debut at the historic Avery Hill Mansion.
Moving beyond simple walk-through haunted mazes, this cinematic horror event transforms the grounds into a fully realised, interconnected living world named 'Halloween Town.' Featuring two headline attractions - Avery Hill Asylum and Sundown Manor - alongside five hidden mini-experiences scattered across the realm, it combines Hollywood-grade set design, award-winning makeup, and interactive live theatre for a truly terrifying night out.