The oldest building would be the cathedral built between 1628 and 1633 although the city walls were built between 1613-1618 and are still standing and complete

Signal messenger has a note to self function that can be opened on the phone and windows that will do text and small files

You’ll want to avoid pornlemmy.com and lemmynsfw.com . Lots of nudity and unwholesome behaviour depicted there

Edited for spelling

You should be very careful to avoid pornlemmy.com and lemmynsfw.com both of these may contain lots of posts you would not be interested in