Simplify the following text for a Grade 6 native English-speaking person.
Original: In 1563 the garden was relocated from its original riverside location ( now the Medicean Arsenal ) to one near the convent of Santa Marta , and in 1591 again moved to its third and current location .
Simplified: In 1563 the garden was moved from its original place near a river ( now the Medicean Arsenal ) to one near the convent of Santa Marta . In 1591 the garden was again moved to a third place , where it still is .