The botanical building and the lily pond in front of it are absolutely stunning and definitely worth a visit! It’s not a large building so you don’t need to earmark more than a half hour to visit unless you’re exploring other areas of the park too. It’s not far from the organ pavilion or the museum of us, so you can definitely make a day out of your trip if you want to. Parking is notoriously difficult on weekends, so consider ride share or transit if you can