The Fortress of Arad is a solid fortification system which was built in the 18th century at the orders of, and with the funding from, the Habsburg Empress, Maria Theresa. The cost to complete and erect the fortress reached 3 million Gulden (the currency used by the Habsburg Monarchy at the time). The fortress was built as an inner fortification system to protect the outer region of the Habsburg empire from conflicts in the area.
The main conflicts at the time were the ongoing wars between the Habsburgs and the Turkish Ottomans. The location for the fortress was chosen strategically to be at the crossroads of two very important trade routes of the day. It lies in the middle of the trade routes that led from the West to the Transylvania Region, and from the North, Oradea, and Satu Mare, to Timisoara, and down to the Danube waterway.