Temple:

Build a Temple in Sid Meier’s Civilization VII for 40 resources to satisfy citizens and protect against volcanoes.

A Temple costs 40 resources to build and has a maintenance cost of 1 resource. You can sell it for 40$. Since its introduction, a Temple has satisfied 1 unhappy person and also protects against the 'volcano' disaster. A Temple means a happier citizen, which means a happier city. You can raise up the standards for city size at the beginning in all cities with this. Later on you'll have better buildings for this task, but build it anyway, less unhappy citizens means more score, always.