An unusual horse trough

One of the attractions in Bruges in Belgium is the horses and carriages that can be hired for a sightseeing trip around the city. Sitting in a local cafe opposite this horse trough, which I didn't think was in use, I observed the owner of a carriage open a door on the side and fill a bucket of water for a very appreciate horse. One of the many attractions in this interesting city. As a cyclist I watched in fascination the hundreds of bike ridden here from young children on tandems with their parents to elderly folk like me,and they all looked very fit. Time to get that bike out?