A large mural of the attraction, an amusement park, city
skyline, national park etc is painted on a wall as a
backdrop for visitors to take pictures in front of.
The picture is rotated 45 to 90 degrees counter
clockwise so the people
standing in front of it can be made to appear to be flying
over the area when the camera is similarly rotated to
match the angle of the background picture. When the
picture is viewed back at horizontal, the people that had
their pictures taken in front of the backdrop while
standing vertically now appear horizontal as well giving
the impression that they're defying gravity.
They can strike a flying superhero pose with their arms
up
in the air, which when rotated, would appear in the
picture to be their arms in front of them while they soar
over the area being visited.
Other illusion pictures could be created by having
backgrounds painted on the ground that people would lie
on while pictures were taken from an overhead. (see
link)
The pictures would again be of the site being visited,
and
the people could appear to be soaring over each other,
holding each other up in the air in the palm of their hand
etc. They would be encouraged to be creative and I think
this would be a great attraction that would cost almost
nothing to create.
The background art would of course include promotional
captions of the attraction on the backdrop. "Flying High
Over Grand Canyon!" or "Soaring Over Waikiki" etc.