If they're old enough, maybe a photo of the outside of Sydney's oldest pub - sure to be a controversial one as there's a few that make that claim.
We have security patrolling the area all the time, so people feel safe and their possessions are kept safe.
How cold is cold? The confident lovemakers were far from modest, ignoring the fact they could easily secure privacy by drawing the floor-to-ceiling curtains on the window.
Mr Tunick said he was delighted to be able to assemble the installation at the base of "one of the most beautiful architectural structures in the world".