Place is not a preposition. A preposition is a word that can be added to the end of a complete sentence which can then make a longer sentence. E.g. of a complete sentence: The cat sat.
You can then use the preposition "on" to extend the sentence to: "The cat sat on the mat". You could then use more prepositions to extend the sentence again: The cat sat on the mat for the whole morning without getting up for a stretch until the mail man arrived. Each word that comes directly before the preposition could also be the end of the sentence. Place, cannot be used as a prepositon
