The Wellington Monument, or sometimes the Wellington Testimonial, is an obelisk located in the Phoenix Park, Dublin, Ireland.
The testimonial is situated at the southeast end of the Park, overlooking Kilmainham and the River Liffey. The structure is 62 metres tall, making it the largest obelisk in Europe.
Wikipedia https://en.wikipedia.org/wiki/Wellington_Monument,_Dublin
Coordinates 53°20'56.563" N -6°18'11.222" E