Finnish does not have articles like "a" or "the". Instead, it uses word order to show what is already known and what is new. The general rule is: old (given) information comes first, and new information comes last.
When a sentence starts with the subject, it acts as known information (often translating to "the" in English).
Location First, Subject Last
If you want to introduce a new subject (translating to "a" or "some"), move it to the end of the sentence. These sentences often begin with a location.
Shifting Emphasis
Finnish typically follows Subject-Verb-Object (SVO) order. However, because word endings (cases) tell you who is doing what, you can freely move words around to shift emphasis.
Whatever is placed at the end of the sentence carries the most focus (the new information). Compare these two sentences:
In the first sentence, the object (esineen kauneutta) is the new, emphasized information. In the second, the object is given, and the subject (tämä katselukulma) acts as the "punchline."
Arranging the Exhibition
When curating your exhibition, pay attention to how the most important new details naturally fall at the end of the clause.