I live in Barcelona, and I dislike their house numbering system. In Buenos Aires, things are much more rational: one block is 100m.
So the first house may have a number somewhere between 0 and 20, depending on how far the entrance is from the corner. The last house number on that block will be below 100.
On the next block, the first house will be numbered somewhere between 100 and 110-120, depending on how many meters the entrance is from the second corner.
This system is amazing. Without much mental effort, you can understand how many blocks you need to walk to reach house 340 if you are starting from the first block.
In Barcelona, you can walk 400m and still see only four house numbers. It doesn't make sense at all. In addition, one side can be odds and the other even, but sometimes you have one side going 5, 10, 12, 22, and the other side of the street 453, 421, 411. There is no order.
They also use things like 26A, 26B, and 26C because each house cannot have its own number. And they also use ranges. My house, for example, is not Streetname 26. It's Streetname 26-28. Bonkers.