I think the third one is the strongest but the bright gap on the left is distracting to me. I probably would have adjusted where I was standing to create a framing composition around the edge of the image using the columns or crop in post to do the same.
The first two aren't super interesting... The sky in particular looks flat and doesn't have a lot going on in it to justify taking up such a large percentage of the frame... Which for me aggravates what looks like most of the structure being out of your field of sharpness (hard to tell and i could be wrong, I'm looking at this on my phone using Tapatalk) and it looks almost like there's a bit of haloing around it as well.
Im not an authority on landscapse photos though so take my comments with a grain of salt.
Thanks for sharing, btw. It looks like you had a fun day. I love too far from the ocean to visit often so I really enjoy photos of it when I get the chance.
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