This is the 3261st most frequent Japanese word.
屈指
"屈指" means "outstanding" or "one of the best."
In this sentence, "屈指" is used to emphasize the exceptional status of the region as one of the top destinations.
この地域は屈指の観光地だ。
This region is a top-ranked tourist destination.
The use of "屈指" here indicates that he is considered among the best engineers in his field.
彼は業界屈指のエンジニアとして知られている。
He is recognized as a leading engineer in the industry.
"屈指" in this sentence highlights that the paintings on display are of high renown and quality.