The definition of a fountain can be hard to pin down. Do you really need water spraying in the air? I don't think so. In the middle of Bethesda Place Plaza is a large shallow pool with rocks in it. On weekends you see kids jumping from rock to rock while waiting for a table at the Original Pancake House. Sooner or later one will miss the rock and land in the water.
Even though it looks calm, there is a bit of a current because of the filter. I almost lost the duck because he went for a swim in the middle of the fountain.
Bethesda Place Plaza is easy to miss since it is raised a bit from most of the roads. You can get to it by going up stairs on Woodmont Ave, or the stairs by the Safeway on Old Georgetown Rd, or up some stairs of Commerce Lane, or from Wisconsin Ave (MD-355). In the summer they have lunchtime concerts here too.
Read all of the Bethesda Fountains series.