enclave
It's actually an exclave. :) But interesting, I don't think I'd heard of it before.
It's technically both an exclave and an enclave but yeah exclave would be the better word to use. There's some great ones between Antwerp and Tilburg with second-order enclaves that cut across streets and through houses.
@Colonel_of_Truth started
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It's actually an exclave. :) But interesting, I don't think I'd heard of it before.