Monument Browser is no longer available (for W10M)
(All About Windows Phone)

It has been brought to my attention that the popular Monument Browser is no longer in the Store for Windows 10 Mobile devices. It seems that the developers have finally starting compiling against a minimum OS version number that`s higher than W10M reached. Which was inevitable, and the day has come. Having said that, if you have Monument Browser installed already then it should carry on working much as it did.