tdbcelts.org

I'm afraid that once you add the cost of plane fare, the cost would knock this off the list of possible venues for events but imagine how totally hatchet it would be to get langered in a (reconstructed) Irish ring fort! As the interpreter guide mentions you can rent the ring fort for a night (you rent the whole park actually) for 300 euro for 6. No video embeds in the forum so here's the link:

https://www.youtube.com/watch?v=yZP3mbYS6w8

This is a mini-tour of the Ring Fort replica at the Irish National Heritage Park in Wexford Ireland. We spent a day exploring the park. The ringfort is modelled on that of a middle-ranking member of the Gaelic nobility, in the newly Christianised Ireland of 1500 years ago. It is surrounded by a strong oak palisade with a tall watch-tower.

The park is located in Wexford.
More details about renting it can be found on their website:
http://www.irishheritage.ie/product/rin ... flat-rate/

Damn that would be cool

Just build one! (Magyver?)