This is the 11074th most frequent German word.
schwarzenbergplatz
"Schwarzenbergplatz" is not a German word but a proper noun referring to a square in Vienna, Austria.
In this sentence, 'Schwarzenbergplatz' is the proper noun used as the name of a location, specifically a square in Vienna.
Der Schwarzenbergplatz ist ein historischer Ort in Wien.
The Schwarzenbergplatz is a historic place in Vienna.
Here, 'Schwarzenbergplatz' again functions as a proper noun referring to the square, indicating the direct object of the action 'besucht' (visited).
Ich habe gestern den Schwarzenbergplatz besucht, um die Denkmäler zu betrachten.
I visited the Schwarzenbergplatz yesterday to look at the monuments.
In this sentence, 'Schwarzenbergplatz' acts as the location where the event occurs, emphasizing its spatial relevance.