a 4500-year-old dolmen stuck in the middle of a housing estate! 

This Dolmen is located in Ballybrack in south County Dublin dates from approx 2500BC. Its granite capstone has beautiful shiny quartz mixed through it. It measures 5 foot X 5 foot and probably weighs approx 12 tonnes. It would have been covered in a cairn of stones of which none survive. It is now located in the middle of a housing estate and is vulnerable to constant graffiti and being used as a fire pit and for the odd BBQ!