Google Maps introduced a new feature that allows users to look inside of buildings to see floor plans. To use this feature, simply click on a building on a Google map. The map then allows you to navigate different levels of the building.
This feature is only available in participating stores. The business owner needs to upload the store layout to Google Maps in order for this feature to work. To see the layout of a store that does not use this Google Maps feature, check the store's website, as some businesses post their floor layouts on the company website.