For a strong emotional impact:
* Haunting: This implies a lingering, often unsettling feeling that sticks with you.
* Enduring: This suggests a feeling that persists over time.
* Unforgettable: This emphasizes the power of the feeling or image to remain vivid in memory.
For a positive impact:
* Memorable: This describes something that is easily remembered, often for positive reasons.
* Inspiring: This suggests a feeling that motivates or encourages.
* Moving: This indicates a feeling that deeply touches or affects someone.
For a more neutral impact:
* Impactful: This describes something that has a strong effect, whether positive or negative.
* Significant: This suggests something that is important or meaningful.
* Lasting: This simply means that the feeling or image continues to exist.
To be more specific, consider what kind of feeling or image you want to create:
* Awe-inspiring: This evokes a sense of wonder and amazement.
* Heartwarming: This creates a feeling of happiness and contentment.
* Thought-provoking: This stimulates contemplation and reflection.
Ultimately, the best word will depend on the specific context and the desired effect.