The amr-events plugin is in an almost alpha state, suitable for some testing (Still some debug statements lurking around!) . Get a preview by testing it yourself at http://icalevents.com/test/.
It aims to provide full implementation of the ical RFC 5445 specification, while reatining the ability to be scaled down for more basic use. It has either simple built in location to map link functionality, or will integrate with a number of “geo” plugins.
The ics feed has been tested with a number of calendar programs including google.
For more details: