How many letters does the top answer for “home of cairo tower” have?

The most common answer is gizagovernorate (15 letters).

Crossword clue: home of cairo tower

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

gizagovernorate 15 letters wd-fact-v3

zamalek 7 letters wd-fact-v3

home of act tower 50% similar → hamamatsu

home of almaty tower 50% similar → medeudistrict

home of avala tower 50% similar → belgrade

home of bt tower 50% similar → londonboroughofcamden

home of cajasol tower 50% similar → seville

home of canton tower 50% similar → chigangsubdistrict

home of chifley tower 50% similar → newsouthwales

home of cn tower 50% similar → toronto