What is considered to be the oldest unopened bottle of wine in the world?

The Speyer wine bottle is believed to be the oldest unopened bottle of wine in the world. It is dated to around 325 AD – 350 AD. The bottle was unearthed in 1867 and is one of 16 found in a sarcophagus in the grave of a Roman nobleman and his wife. Only the one bottle was found still intact. The liquid according to experts, which is no longer alcohol, has most likely survived this long because the bottle was sealed with wax and olive oil was poured into the bottle to preserve the wine.

Since its discovery, experts have debated on whether or not the wine should be opened and analyzed. For now, the bottle remains unopened as part of the Pfalz Historical Museum collection in the German City of Speyer.