Few landmarks are more closely associated with Bologna than the Two Towers (Le Due Torri). Rising above the city's rooftops, the Asinelli Tower and Garisenda Tower have watched over Bologna for nearly nine centuries and remain the city's most recognisable symbols.
For many visitors, they are simply a great photo opportunity. Yet behind these medieval structures lies a fascinating story of rivalry, wealth, ambition, and survival that reveals much about Bologna's past.
A City Once Filled With Towers
Today, the Two Towers seem unique, but during the Middle Ages they were only a small part of Bologna's skyline.
Between the 11th and 13th centuries, powerful noble families competed for influence and prestige. One of the most visible ways to demonstrate wealth was to build a tower taller than your rivals.
Historians believe medieval Bologna may once have had between 80 and 100 towers, transforming the city into something resembling a medieval Manhattan.
Who Built the Two Towers?
The towers were constructed during the early 12th century by two influential families.
The taller tower became known as the Asinelli Tower, traditionally associated with the Asinelli family. The smaller tower became known as the Garisenda Tower, linked to the Garisenda family.
Although historians continue to debate some details, the towers were likely built between 1109 and 1119, during a period when Bologna was expanding rapidly and wealthy families sought to demonstrate their importance.
Why Were Medieval Towers Built?
Unlike modern skyscrapers, medieval towers served several purposes at once.
They were symbols of wealth and political influence. A taller tower signalled a more powerful family.
They could also provide protection during periods of unrest, offering elevated defensive positions and a place of refuge. At the same time, they functioned as public displays of prestige.
For medieval Bolognese families, height mattered. The higher the tower, the greater the statement.
The Asinelli Tower: Bologna's Tallest Survivor
Standing at approximately 97 metres (318 feet), the Asinelli Tower remains the tallest leaning medieval tower in Italy.
For centuries it has served various purposes. It functioned as a defensive structure, a lookout point, a military observation post, and later even as a site for scientific experiments.
One of the most famous stories connected to the tower involves Galileo Galilei. According to tradition, experiments relating to gravity were conducted from the tower, although historical evidence remains debated.
Today visitors can climb nearly 500 wooden steps to reach the summit. The reward is one of the finest panoramic views in Bologna.
Why Does the Garisenda Tower Lean So Much?
While both towers lean, the Garisenda Tower is the more dramatic of the two.
Originally it may have stood close to 60 metres tall. However, unstable ground caused the structure to lean significantly during construction.
Fearing collapse, medieval builders eventually shortened the tower to its current height of approximately 48 metres.
The visible tilt became so famous that even Dante Alighieri mentioned the tower in The Divine Comedy.
The Legend of the Two Towers
Like many historic landmarks, the Two Towers have inspired local legends.
One popular story tells of a poor young man who fell in love with a noblewoman. Her father refused permission for the marriage, believing the young man lacked wealth and status.
Determined to prove himself, the young man supposedly discovered hidden treasure and used his fortune to build magnificent towers. Impressed by his success and perseverance, the nobleman eventually approved the marriage.
The Towers Through the Centuries
The Two Towers have survived earthquakes, wars, political upheavals, and centuries of urban change.
As Bologna evolved from a medieval commune into a modern city, most of its towers disappeared. The Asinelli and Garisenda Towers remained, gradually becoming symbols not only of powerful families but of Bologna itself.
Artists, writers, travellers, and photographers have been fascinated by them for centuries. Today they appear on postcards, guidebooks, university materials, souvenirs, and city branding throughout Bologna.
Visiting the Two Towers Today
The Two Towers stand at the intersection of several of Bologna's most important historic streets and remain one of the first landmarks visitors encounter when exploring the city centre.
The Asinelli Tower is usually open to visitors, offering spectacular views over the rooftops of Bologna.
The Garisenda Tower cannot normally be climbed, but its dramatic lean can be appreciated from street level and from various viewpoints throughout the historic centre.
More Than Just a Landmark
The Two Towers are more than a photo opportunity.
They are reminders of a time when Bologna was one of Europe's wealthiest and most ambitious cities, a place where powerful families competed to leave their mark on the skyline.
Today, while almost all of Bologna's medieval towers have vanished, the Asinelli and Garisenda Towers continue to tell the story of the city's extraordinary past.