This is the Denver City Park lake. The Boat House in the center of the picture.
In the summer you can rent paddle boats here.
This picture is taken from the steps of the Denver Museum of Nature and Science.

You can see the state capital dome in the background.
The cash register building is on the right. Who can miss that classic profile.

For some winter contrast, here is the same scene from an old post, September 2007.
It looks so much warmer in the early fall.