Here are some synonyms for impressive:
* Magnificent
* Spectacular
* Remarkable
* Striking
* Awe-inspiring
* Outstanding
* Exceptional
* Brilliant
* Extraordinary
* Memorable
Here are some examples of how "impressive" can be used:
* "The new stadium is truly impressive, with its modern design and advanced technology."
* "Her performance was impressive, showcasing her talent and dedication."
* "The company's growth over the past year has been impressive."
* "The view from the mountaintop was simply impressive."