There is a new attraction, in England, thats a bit like a
HHN House it's called 'The London Tombs' and it's situated beneath London Bridge. I went a few weeks ago and really enjoyed it
http://www.thelondonbridgeexperience.com/index.asp
http://www.youtube.com/watch?v=GqTOnN3IFt0
Years ago (over 10) there was an attraction in the London Trocadero called 'Alien War'. Based on the Alien films you were led through dark corridors by US Colonial Marines whilst being attacked and chased by Aliens and Facehuggers, it was awsome!
http://en.wikipedia.org/wiki/Alien_War
http://www.youtube.com/watch?v=O6oCor2VsKE