San Francisco Museum of Modern Art

Above the Galleries is a Sixth Floor catwalk below the museum's amazing skylight. The bridge
is open steel - providing these tykes with a view of the masses walking about the floors below.
They were enthralled. I've no idea how long they stayed there. Folks carefully walking around them.
Mom and dad seemed infinitely patient with all of this.
They were there as I arrived. Asked permission to photograph them. Made several captures.
And made off into the afternoon - along with my companion - and this treasure.