TWRoO on 07 April 2012
Apparently it's owned by some company called Blackstone now... that was even more obscure than my 100 year old Siemens logo.
http://en.wikipedia.org/wiki/Buena_Vista_Palace_Resort_%26_Spa
Here's a new one if anyone wants a go... it's a British company. They are at least world famous but it will probably be tricky to figure out for non-Brits unless you know a lot about old computers.
