This story doesn't have an ending. Unfortunately I was not for a long time there so I can't say exactly where this Horse is located
They say it's near the St. Peter church.
Take your chance these holidays to be pictured near a live legend monument: these days when we have -10...-20 °C outside, in the end of November, four British tourists had an attack on some horse inside of the Old Riga. They were shooting completely naked ON this horse. When they have been arrested and prosecuted 75 Ls (about 110 EUR) each, nobody could name reasons of why they did it.
Here we also have the video from the Riga Municipal Police (follow on YouTube
But they still have made a picture
! and it seems like they were allowed to do it
The police arrives right after they made it...