How many letters does the top answer for “home of st giles' cathedral” have?

The most common answer is cityofedinburgh (15 letters).

Crossword clue: home of st giles' cathedral

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

cityofedinburgh 15 letters wd-fact-v3

home of cathedral of st louis 60% similar → plovdiv

home of st andrew's cathedral 60% similar → glasgowcity

home of st bavo's cathedral 60% similar → ghent

home of st martin's cathedral 60% similar → spisskakapitula, spisskepodhradie