When we want to talk about a past event or experience that we remember fondly, we often use the phrase "look back on". However, there are many synonyms for this phrase that can help add variety and depth to our writing and speaking. For example, we could use "reminisce about" to suggest that we are taking a trip down memory lane. Or, we could use "reflect on" to indicate that we are thinking deeply about the past. Other options include "recall", "remember", "think back to", and "review". By using synonyms such as these, we can bring a richer, more nuanced tone to our language when discussing past experiences.