General synonyms:
* Observe: Implies a more focused or attentive look.
* Behold: Suggests something impressive or awe-inspiring.
* Witness: Implies being present at an event.
* Glance: A quick and brief look.
* Gaze: A long and steady look.
* Notice: To become aware of something.
* Spot: To find something by looking carefully.
* Catch sight of: To see something briefly or unexpectedly.
More specific synonyms:
* Discern: To see something clearly, often with difficulty.
* Perceive: To understand something through the senses.
* Recognize: To identify something that you have seen before.
* Inspect: To examine something carefully.
* Survey: To look at something from a distance.
Figurative synonyms:
* Comprehend: To understand something mentally.
* Realize: To become aware of something.
* Grasp: To understand something fully.
The best word to use will depend on the specific situation and the feeling you want to convey.