On my first afternoon in Riga, as I sat with a coffee in the Livu Laukums, my eye was naturally drawn to the large bright yellow snail in one corner. Later that day I spotted a green one in the Ratslaukums and I was to come across several more during the course of my stay. What is more, these snails were on the move; slowly (as is normal for snails) they made their way around the city, each day a little further from their original starting place.