This seed features a skeleton dungeon which has been generated above ground just left of spawn. Normally dungeons are generated in tunnels and caved deep underground but on rare occasions they have been found above ground as well.
The spawn is in front of a large ocean. To the left of spawn you will find the dungeon. It’s sheltered by some trees. It doesn’t include any chests which they normally do but it’s definitely a unique seed.
The skeletons won’t spawn until it’s dark so it’s safe to explore during the day. (Yes, I spawned some skeletons in the above image just to get a better image!)