The Canadian Coast Guard recently renewed all of our fixed navigation aids.
Here's the old one by the Songhees rock:
The old one is a round pillar with a concrete base.
Whereas the new structures are more utilitarian, square:
Sitting on pilings instead of a concrete base in this case.
And here's the old one on the other side of the entrance to the Inner Harbour (remember, Red-Right-Returning):
It's a round pillar atop a square concrete pad.
The pad was replaced by another pad in this instance, I guess because it was more accessible at low tide, but the top got squared off: