First and foremost, the solar system is a story. The arrangement of the planets gives clues- the ersatz-rocky metal world, orbiting so close its year is shorter than an Earthly day, must have gotten there somehow. Its warm cousin, a supercritical world of ocean that much more resembles an ice giant, has a telltale wobble that speaks of its arrival so deep in the system. Even the most well-erased of traces tell such interwoven narratives- a distant and cold world reflects glances, but beneath the ice and the volcanic remnants of an averted greenhouse... one can taste traces of another sea.
Beyond, a depopulated asteroid belt- the tumult of ages past is gone, but it speaks all the same. Sample the regolith of that dwarf planet... isn't it familiar? Under layers of igneous rock, that telltale hint of salt. Other little worlds are sprinkled across the system, kicked out or in by their larger sisters- even intra-system migration is hardly gentle. Attesting to that is another world of seas- an inverted twin to the ocean world, a hydrogen atmosphere giving way to a protective layer of ice giving way to a deep sea far from the planet's place of birth.
Between the belt and the cloud of lost worlds, then. Twin worlds face each other, stirred by the shapes of their surfaces and orbits- wreathes of cloud nearly as expansive as those on the Venusian world scud by above plains interrupted by vast volcanoes on both worlds, activity kept alive by the spiraling orbit of the pair. Last and largest, least changed by its long history- another pair of planets. Close-together giants, sienna in color and spotted with storms, a system in miniature spinning around them- families of asteroids, a truncated evolutionary cycle of moons, the ghost of a ring system.