As legend (and science) have it, a long time ago, Lake Bonneville filled the Salt Lake valley and much of the surrounding region. The old shoreline still forms a perfect indentation in the valley foothills, and it’s the baseline for a hundred-mile trail that hugs the hillside today.
This little peak is the perfect way to view the city. Just don't do it on the hottest day of the year because you'll hate it. Take a picnic and watch the sunset. Ensign Peak is at the north end of the Salt Lake Valley, above the State Capitol building.