The enhanced Street View was recently launched on the Google mobile app. The software is available for both Android and IOS operating systems.
In order to enjoy this awesome new development, you will need to own a pair of virtual reality goggles. You can choose between the two models that currently exist on the market - Google Cardboard and and Samsung Gear VR. Cardboard is the cheaper, more accesible option while the Gear VR provides a more comfortable, premium experience.
Consider buying a new VR headset before taking your next trip - it could give you a better idea of what the experience will look like!