This is the 15316th most frequent Russian word.
построенных
The Russian word "построенных" means "built" or "constructed" (used as a past participle, typically modifying a plural noun).
The word "построенных" is a participle used as an adjective to describe the noun "бизнес-центры" (business centers).
Новые бизнес-центры, построенные в этом районе, привлекают много арендаторов.
The new business centers built in this area attract many tenants.
Here, "построенных" acts as an adjective linked to "зданий" (buildings), describing the action of building performed by famous architects.
На выставке показали модели зданий, построенных известными архитекторами.
At the exhibition, they showed models of buildings built by famous architects.
"построенные" here modifies "примеры" (examples), indicating they are based on real facts.