A typical visit takes approximately 30 minutes to 1 hour, mainly for ascending, enjoying the view, and descending.
Plan for about 30 minutes to an hour at the tower itself. This allows sufficient time to climb the stairs, absorb the panoramic views from the top, read any interpretive signs, and descend. If you combine it with the surrounding park or other nearby attractions, allocate more time.
For a more immersive experience, you might spend an additional hour exploring the gardens or enjoying a coffee at a nearby establishment.