Build a Golf Course in a tile where a Wonder was started, but built by another Civ

Achieve the maximum Alliance level with Gilgamesh

Gain control of an Ally's city after it becomes disloyal, and choose to keep it

Win the game while in a Dark Age

Achieve a Heroic Age

Have an improved Amber resource in a city with a Zoo and an Archaeological Museum.

Use two cities and the Panama Canal to make 7 contiguous land tiles passable by ships

Have a fully upgraded Giant Death Robot capture a city

Have a city with a Wind Farm, Solar Farm, Hydroelectric Dam, and Geothermal Plant

Have your Roman city lose 6 population from one Vesuvius eruption

Perform a Rock Concert in Cleveland