This is the 12383rd most frequent German word.
vitznau
"Vitznau" is not a German word; it is the name of a town in Switzerland.
Here, 'Vitznau' is used as a proper noun within a destination context, referring to the name of the town someone intends to travel to.
Ich plane, Vitznau im Sommer zu besuchen.
I plan to visit Vitznau in the summer.
In this sentence, 'Vitznau' functions as the subject, again as a proper noun denoting the geographical entity of the town.
Vitznau liegt am Vierwaldstättersee in der Zentralschweiz.
Vitznau is located on Lake Lucerne in central Switzerland.
Here, 'Vitznau' specifies the departure point of the cable car, further used as a proper noun indicating the location.