This is the 789th most frequent Finnish word.
sijaitseva
"Located" or "situated."
In this sentence, the word 'sijaitseva' acts as an adjective to describe the house by its location.
Talo sijaitseva joen rannalla on vanha.
The house located by the river is old.
Here, 'sijaitseva' is used to describe the position of the forest on the map.
Minä näin kartan, jossa näkyy metsä sijaitseva vuoren huipulla.
I saw a map showing a forest located at the top of the mountain.
In this sentence, 'sijaitseva' is an attributive participle used to describe the location of the library as being within the school.