Guinness Lake ~ County Wicklow, Ireland
See, I told you it actually looks like a pint of Guinness!
It's actually called Lough Tay and it is set in between the stunning Wicklow Mountains. The best viewpoint is off of the R759 if you're driving your self. Or there are many tour companies that offer day trips from Dublin to the Wicklow Mountains National Park and most of them will include a stop at this scenic lake. Definitely worth a stop to enjoy the view!
**See my full Ireland itinerary here.