I came across a decent phone app called MIMOA that compiles modern architecture throughout the world. This user-generated guide provides exact addresses and interactive maps that make it easy to search these buildings and to read something about them, the architect and other factoids. The information is generally good, accurate and the pictures appear to be relevant and of good quality.
The app allows you to search by building type (architecture, infrastructure, interior, etc), function (housing, hospital, hotel, lab, etc.) country, city, public/non-public and designer.
While it is comprehensive the interface is clumsy – i haven’t been successful at searching for buildings nearby because it cannot figure out where i am at.
Their website is https://www.mimoa.eu/