There are a number of material and technology advances [1] that accelerated the pace of the Sagrada Familia's construction — the techniques used to construct the basilica have evolved significantly since construction began.
There are a few workarounds that don't involve undocumented APIs for this, as someone else in this thread mentioned.
Facebook's Groups app uses (disclaimer: as far as I can tell) an interesting technique involving saving data URIs to the home screen and then deep linking them.