They like HABA stones and marble bridges. We love that they all work together. These blocks are great, but oddly they have a very strong "glue" smell that takes forever to dissipate. It's odd because it doesn't look painted or finished in any way as far as I can tell. My only minor complaint is that I wish it had more main blocks, especially long ones. There are tons of little cubes. A lot of people might disagree with me because "unusual" elements are cool. I love them too, but for building + building marble walkways in particular, we need a lot more basic tall blocks. I would buy as a complement, they made them.
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