The phrase "impressive ruins" refers to ancient or old structures or buildings that have been partially destroyed or left in a state of decay, but still remain visually stunning or awe-inspiring. Full definition
Spend 10 days seeing the most impressive ruins in the country. (enjoyguatemala.com)
We also visit several impressive ruins along the way and experience a growing sense of anticipation at our overnight camps as we draw closer to our goal. (aito.com)
At one point this civilization consisted of over 40 cities spread across southern Mexico, Guatemala, Honduras, and northern Belize where there are some of the most impressive ruins of these ancient cities that can be visited today. (aweekatthebeach.com)