It really depends. Nowadays with the internet, you may be able to find information on the development and its surrounding. Especially if you are buying off plan developments.
I don't think you can beat a physical viewing but if you are not able to make it in person then videos, virtual reality and even drones are good alternatives.
Personally I think it would be madness to buy a property without viewing it (where possible). If you are buying a property out of yoru area or overseas this poses even greater problems.
On the other google earth sattelite imagery could show up issues that you would never notice on a viewing. How often do you check the top of the roof? Relying on the internet is not quite the same as relying on pictures provided by vendor.