Landmark
From Openwaterpedia
noun - Landmarks are large, visible or stationary objects that are easy to see with a quick sighting from the perspective of the swimmer in an open water swim. Landmarks includes buildings, light poles on piers, jetties or anchored boats visible from the distance.
The swimmer looked for various landmarks as she was swimming into to shore at the end of the race.
Origin
Origin: bef. 1000; ME; OE landmearc
Synonyms
guide, point and mark