It really is beautiful. In Munks (The biggest Yekishe kehilla in the UK), they sing it on ??? ??? after Davening, and the children all run around the shul together. It is a bit of a ????? for Davening and my father never let me go when i was a child.
The Minhag started in Frankfurt where the children would make a train by putting their arms on each other’s shoulder and march around the shul singing Adon Olam, which is very beautiful.