The townhouse at Rynek 1 - today Przemyśl City Hall - dates back to the turn of the 15th & 16th centuries and was once owned by wealthy merchants. The building includes two underground levels with an area of nearly 400 square meters, which reach 10m below surface level. Here the owners stored their goods - wine, mead, salt, salted meats, produce, dairy products and more - and conducted trade. Over the decades these spaces were also used as workshops, inns and even sleeping quarters for servants. In recent years the city has renovated these cellars and opened them to the public - including a 100m section of a 17th-century sewage canal - with multimedia exhibits about medieval life in Przemyśl. There are further plans afoot to eventually connect the canal to the multi-storey cellars of neighbouring buildings, thus creating a vast network of corridors under the market square.