Welcome to San Francisco where you can regularly come across slideshows of different company's offices. There's even an office version of Cribs on TechCrunch: http://techcrunch.com/video/tc-cribs/

On Office Snapshots, an office porn compendium, San Francisco is the city with the most posts (150): http://officesnapshots.com/location/united-states/california/san-francisco/

And here's an article about some of the people who design startup offices.

Here are some sample office porns:

Twitter: http://www.businessinsider.com/photos-twitter-office-hq-in-san-francisco-2014-4?op=1

Uber: http://recode.net/2014/05/20/where-are-the-fishtanks-touring-ubers-surprisingly-sober-new-office/

Airbnb: http://www.metropolismag.com/December-2013/Rooms-with-a-View/ => also a great example of a plant wall.

Zynga:http://www.businessinsider.com/cool-offices-zynga#you-enter-the-lobby-through-this-glowing-tunnel-1

Github:http://www.wired.com/2013/09/github-office/#slideid-559532

Square: http://mashable.com/2013/10/11/square-headquarters/

Dropbox: http://www.businessinsider.com/dropbox-office-tour-2014-6?op=1

Quid: http://officesnapshots.com/2012/01/18/quid-headquarters-by-studio-oa/