You are downloading the Trieste AppX file v1.0.3.0 for Windows Phone. Trieste is a free Travel App: City guide about. You can now download the offline AppX package file to install & try it.
Download Locations for Trieste 1.0.3.0 AppX file
Package File
Please Click Here > to retrieve available package files for Trieste.
Please be aware that the Trieste AppX file you are to download is hosted on the Microsoft Store CDN server. You can read more about Trieste or get it on Microsoft Store.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Trieste AppX file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.