Pretty much every aerodrome, from an international airport to a private grass strip is depicted on a sectional chart. But there are few or no heliports shown. Why is this? Do helicopters have a separate sectional chart? It seems that even for a fixed wing pilot they would be useful as easily recognizable landmarks.
Just as a caveat, I don't have any actual paper sectionals. I am referring to what is shown at vfrmap.com. I have always presumed that their site is a good representation of the official charts, but it's possible there are things not shown online that are on the actual sectionals.