This device really won't offer anything like the same experience as "visiting anywhere in the world". A more accurate description of its capabilities would be making little 3D characters sort of look like they are sitting on your furniture...
The problem is anything that requires the user to wear strange glasses or any other kind of contraption on their head will never last beyond the: "wow I've got to try this new toy" stage... which usually lasts a couple of months at best, before the device becomes a dust collector.
Sure hardcore geeks will insist on using it a little longer, but even they will get bored eventually.
VR/Augmented reality will probably be reasonably popular on the next generation of games consoles, but I imagine it will suffer the same fate as the Wii and 3D televisions before it.
Expect VR to make another comeback some time in the 2030's when someone figures out how to stream reality directly into your brain, without you having to look an extra from Lawnmower man. ;-)
It's good Microsoft are trying out new things, but nobody yet has been able to come up with another true game-changer since multitouch started the smartphone and tablet revolution. The next one will probably be something to do with cheap high-capacity memory, long-lasting battery technology, or long-range wireless power. Hopefully one of these will come along sooner rather than later.