if humans cease to exist, probably objects made of metals such as bronze, gold, silver (jewels, statues, etc.) would last much longer than any other object.
Man has used metals for 10000 years ago, because they lasted longer than wood.
there is evidence of metal tools from the 3000 BC period
The answer is: Bronze statue
An object that created with bronze can last forever, even without being taken care of by humans. In fact, the presence of humans could actually increase the chance of bronze statue of being destroyed especially if they expose the bronze objects to chloride.
