What is a noun for memorable?

There isn't a single perfect noun for "memorable" because it's an adjective describing a quality. However, you could use several nouns depending on the context:

General:

* Memory: This is the most common and straightforward option.

* Impression: This suggests a strong or lasting impact.

* Moment: This emphasizes a specific point in time.

More specific:

* Landmark: For something significant or important.

* Highlight: For something that stands out.

* Milestone: For a significant event or achievement.

The best choice depends on the specific situation. For example, if you're talking about a trip, "memory" might be the best choice. If you're talking about a person's personality, "impression" might be more suitable.