The Arsenale di Venezia, or the Venice Arsenal, is a sprawling complex of former shipyards and armories located in the Castello district of Venice, Italy. This historic site, which dates back to the 12th century, has played a significant role in shaping the city's maritime strength, the Venetian Republic's naval power and its economic prosperity. The Arsenal was a hub of technological innovations and advancements. It was one of the earliest large-scale industrial enterprises in history. By the 16th century, the Arsenal employed over 16,000 people and could produce fully-equipped and seaworthy vessels within a day, an impressive achievement even by today's standards. The exterior of the Arsenale is marked by the Porta Magna, the main gate, built in 1460. It is the first Classical revival structure built in Venice, with two lions taken from Greece flanking the entrance. Beyond the gate lies a vast complex of docks, workshops, and arsenals, spanning an area of 45 hectares. The interior of the Arsenale is a testament to the industrial heritage of Venice. The complex consists of several large and small docks, interconnected buildings, warehouses, and workshops. Among these, the most notable are the rope-making building, the monumental Granaries, and the imposing building of the 16th-century artillery. The interiors are characterized by high ceilings, large open spaces, and architectural details that reflect the functional aspects of the buildings. The Arsenale is also home to the Naval History Museum, which showcases models of ships, weapons, maps, and other maritime artifacts, tracing back the city’s naval history. Today, parts of the Arsenale are used for exhibitions and events, such as the Venice Biennale. The Arsenale di Venezia, a symbol of the power and economic vitality of the Venetian Republic, still stands today as a testament to Venice's industrial and maritime past. It is a unique symbol of the city's historical importance as a major maritime power and a center of trade and commerce. Despite its age, the Arsenal continues to be a significant and relevant part of Venice, combining its rich history and architectural grandeur with its contemporary role as a cultural and exhibition hub.