Put this on your “places to visit” list:

TON 618

This is a quasar 10.4 *billion* lightyears away. It is a 66 *billion* solar mass black hole surrounded by an accretion disk so massive that the total luminous output is 140 *trillion* times that of the sun. It sits at the heart of a galaxy, unsurprisingly, but the galaxy cannot be seen because the accretion disk surrounding the black hole simply outshines the entire rest of the galaxy. It currently tops the list of most massive black holes known.