Supposedly the shortest, anyway - Angels Flight, just outside my window - all 298 feet of it. Olivet and Sinai (that's what the two cars are called) have been going up and down between Hill and Olive - on Bunker Hill, Los Angeles - since 1901. Only ... things get re-invented: the Flight closed in 1969 when the area underwent "urban renewal" - i.e. had its heart and soul and old houses torn out - and in fact was relocated half a block south, re-opening in 1996. Then there was a nasty accident in 2001, and it was closed until March last year (Wikipedia is extraordinarily expansive on all of this).
I feel that this is fall-back tourist photography: having spent the day at a forum on contemporary art and how to converse across its various moving parts (artists, critics, curators, journals), I need more time to get my thoughts in order about the ways in which such conversations work, or don't. But I was certainly left in no doubt that they matter.