head for heights
From Longman Dictionary of Contemporary Englishhead for heightshead for heightsBALANCEthe ability to look down from high places without feeling ill or nervous → headExamples from the Corpushead for heights• They were seated by one of the windows, and Paige was glad she had a head for heights.• The stunt took eighteen months to set up, and was only for those with a strong head for heights.