The garden of oddities

The space between the main building of the Research facility is narrow in every area except the east side, where the zoo and greenhouses are built, but that's not considered part of the Garden of Oddities. We don't know who came out with the name, but we are sure it started as a description. The storages, living beings, and scattered things in there are indeed strange in its nature or for its origin.
Some of the old objects, sheds and decoration are still there because they were somehow useful, even if only because they look pretty. The rest, whether easy or difficult to remove, are there because they weren't in the way in the old days. Currently, there is an implicit rule of leaving things as they are.
Some enjoy the view, others like the mystery or the chaos; the rest of the personal don't mind. Occasional we receive visitors that simply want to see or document the collection of unrelated things, or the beautiful plants and friendly fauna.
Probably, the most peculiar area is the cemetery located at the left of the main gates. Each tomb shows the name of one of the managers that were in charge of the building when it belonged to the local Historians, and a different plant grows at its feet. According to the public records and the descendants of the managers, none of them is buried here, and the legend says that one Historian from the Community opened a few of those sepulchres and find books inside. Other versions of the story say that it was a different item for each one, all of them objects that belonged to the respective person.
There is no evidence that proves that the tombs have been opened, they all remain intact, in the old crystallized oil that is impossible to find since the early community era. There are ways to check a coffin without opening the crypt, or to know things without seeing them, but if that is what happened, why the Historian didn't record that information? And why nobody else has tried to confirm it?
Maybe we don't want to ruin the mystery. Maybe we wan't it to remain... odd.