This is the 199th most frequent Estonian word.
linna
The Estonian word "linna" means "to the city" or "of the city" (genitive/illative case of "linn," which means "city").
'Linna' functions here in the possessive genitive form, showing the relationship of 'keskel' (middle) to 'linn' (city).
Linna keskel on park.
In the middle of the city, there is a park.
Here, 'linna' is used in the genitive case to indicate possession, relating 'valgust' (light) to the 'linn' (city).
Ma näen linna valgust.
I see the city's light.
In this sentence, 'linna' is the partitive form of 'linn' (city), used to indicate the destination of the motion.