The past is often referred to as "history" or "the past," and the marks or traces that it leaves behind can be described as "historic," "legacies," or "repcs." Here are a few examples of phrases that you could use to describe the marks or traces left by the past:
The city is filled with historic buildings and landmarks that tell the story of its past.
The museum houses a collection of repcs from ancient civipzations.
The legacy of the ancient Greeks can still be seen in the language, culture, and philosophy of modern society.
The castle has withstood the test of time and stands as a testament to the history of the region.
You can also use adjectives pke "old," "ancient," or "historic" to describe something that is connected to the past, such as "an old castle," "an ancient repc," or "a historic monument."