Complex sentence: The Cloisters and its adjacent gardens are situated within Fort Tryon Park, and were constructed using grants and endowments from Rockefeller; construction took place over a five-year period beginning in 1934.
Split into simpler sentences: The Cloisters and its adjacent gardens are situated in Fort Tryon Park, and were constructed with grants and endowments from Rockefeller. Construction took place over a five-year period beginning in 1934.