How many letters does the top answer for “home of unipol dome” have?

The most common answer is milan (5 letters).

Crossword clue: home of unipol dome

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

milan 5 letters wd-fact-v3

the capital of Lombardy in northern Italy; has been an international center of trade and industry since the Middle Ages

home of dome of the chain 50% similar → jerusalem

home of georgia dome 50% similar → atlanta

home of unipol domus 50% similar → cagliari

home of ziggo dome 50% similar → amsterdam