  The top quark, the heaviest known elementary particle discovered at the
Fermilab Tevatron more than twenty years ago, has taken a central role in the
study of fundamental interactions. Due to its large mass, the top quark
provides a unique environment for tests of the standard model. With a
cumulative luminosity of more than 100~fb$^{-1}$ collected at $\sqrt{s}=7,8,13$
TeV by each of the ATLAS and CMS experiments at the Large Hadron Collider in
the first ten years of operation, top quark physics is probing uncharted
territories in precision and rare measurements with sensitivity to New Physics
processes. This document summarizes the latest experimental measurements and
studies of top quark properties.
