The Sims 2: Bon Voyage/Vacation Mementos

A unique feature to The Sims 2: Bon Voyage are special memories called Vacation Mementos. They are displayed in a panel accessed from the Memories panel, and there are 45 of them to collect. Before they are unlocked, only the outlines of them are visible, but by hovering over them with your mouse cursor, a cryptic description is shown. When a Memento is unlocked, the relevant icon will become visible and an explanation of the Memento can be viewed by hovering over it like before.