Dublin

Portabello Lock, the highest of seven locks on the "Circular Line" connecting the River Liffey with the main line of the Grand Canal, in Dublin, Ireland.

The crowds which gather to watch are not just because an English narrowboat is an unusual sight in Ireland, but also because any boat passing through these well cared-for locks is an unusual sight, as few boats venture down into Dublin.

See Google Aerial View of this location.