I can’t say for certain, but my guess is that Geoff shot all of the moving shots hand held, or more probably on a monopod. I got to go to the Hermitage once many years ago, and this timelapse really does the place justice.
Edit: Geoff just sent a couple of short single shot clips he did using – I think – a similar technique. Take a look:
Around the Church on Spilled Blood – St.Petersburg
Hyperlapse move around the church
Through the Cloud Gate
Hyperlapse move through the crowd viewing the ‘Cloud Gate’ sculpture by Anish Kapoor in Millenium Park Chicago