This is the 1871st most frequent Spanish word.
histórica
"Histórica" means "historical" or "historic" in English.
In this sentence, 'histórica' acts as an adjective that describes the buildings as being from or belonging to the past, thus having historical significance.
La ciudad es conocida por sus construcciones históricas.
The city is known for its historic buildings.
Here, 'histórica' qualifies the victory as being significant or monumental in history due to its importance or uniqueness.
Fue una victoria histórica en la competencia.
It was a historic victory in the competition.
In this usage, 'históricas' (feminine plural) describes the sources as pertaining to or originating from past events, and they serve as evidence or records of history.