Study nook (New York, USA), by Adi Gershoni Architect
Source: http://gershonistudio.com/new-york-architect-nyc-loft-p1/
Justin Kemp's sandpit home office
Source: http://www.justinkemp.com/Surfing-with-the-sand-between-my-toes
Marrickville House (Sydney) by David Boyle Architect
Source: http://www.davidboylearchitect.com.au/projects/marrickville-house-1-2/
Soho Townhouse (New York, USA), by Asfour Guzy
Source: http://www.asfourguzy.com/soho-townhouse.html
Old bus office
This home office was created using half the front end of a broken down bus. Check out the link for more pictures.
Source: http://www.reddit.com/r/pics/comments/y267n/bus_office/
Point Piper Home (Sydney)
This study's entirely made by its perfect, expansive view across Sydney Harbour.
Source: http://doublebay.ljhooker.com.au/K2DF93
Villa Rotonda Goirle (Netherlands), by Bedaux De Breuwer Architecten
Source: http://www.bedauxdebrouwer.nl/projecten/single-project-view/parentcat/op-type/project/villa-rotonda-goirle/category/villas.html
Julian Smith's minimalist home office
Source: http://www.reddit.com/r/privatestudyrooms/comments/20u9ha/julian_smiths_actordirectoryoutuber_new_office/
OfficePod
Source: http://www.officepod.co.uk/gallery/
Loft Design by Uglyanitsa Alexander
This one's computer generated - but it's still easy on the eye...
Source:http://mydesign-review.blogspot.be/2012/08/loft.html