The phrase "an impressive aspect" is correct and usable in written English.
It can be used when highlighting a notable or remarkable feature of something.
Example: "One impressive aspect of the new software is its user-friendly interface."
Alternatives: "a remarkable feature" or "a notable element."
For Mr. Alexander, an impressive aspect of this weekend's tribute, appropriately titled "To Nat With L-O-V-E," is the scheduled appearance of John Collins - the same guitarist who was with the King Cole Trio that night in Kingston.
This is an impressive aspect of the project.
An impressive aspect of Ford's results reported Tuesday is how it has been able to steadily reduce its debt while still pouring money into new products.
Many were under five: it's an interesting – and impressive – aspect of Santorum rallies that they are usually family affairs.
Portraits were a constant discipline, a stabilising factor, and the most impressive aspect of her work.
Thomas's confident handling of a chamber orchestra is perhaps the most impressive aspect of the pieces in this collection.
But the most impressive aspect of "Daughter of a Pacifist Soldier" is Ms. Rogoff's rich, seamless braiding of time shifts and characters with movement, speech, music and video.
Still, it's the supermodel's uncanny/terrifying ability to pose like an inanimate object that is perhaps the most impressive aspect of the shoot.
In 1999 our reviewer, Hermione Lee, admired the author's "staggering industriousness" and said the book's "most thoughtful and impressive aspect" is "its account of a young man's self-transformation into a poet".
This claim is the most ambitious and impressive aspect of "Occidentalism," and yet as an argument it surely needs further development.
Perhaps the most impressive aspect of yesterday's play from a Warwickshire perspective was the bowling of Rikki Clarke.
