The Temple of Divine Julius Caesar stands in the Roman Forum on the spot associated with Caesar's cremation after his assassination in 44 BC. Augustus dedicated the temple to the deified Caesar, turning a moment of political violence into imperial memory.
Only ruins remain, but the place still carries weight if you know the story. It is best visited as part of the Forum, pausing here before moving on to the larger arches, basilicas, and Palatine views around it.