I've done a bit of climbing around Chamonix.
All of my climbs have either started from an alpine hut or from the valley, and all have been done in a day.
I was curious if there are any classic Alpine climbs these days that typically require a night out (not in a hut.) The only one that I am familiar with that is often climbed over two days with a bivi is the Frendo Spur on the Midi. Folks seem to often bivi above the rock section, so they can get an early start on the snow/ice top part.
Any other such routes?
I recognize that in today's environment, there are climbers that take a couple of hours to climb routes that traditionally took more than one day. I'm asking about classic routes where the traditional "guidebook time" involved a couple of days of climbing, regardless of whatever speed record has been set recently.