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11 Things to know about The Leaning Tower of Pisa


The Leaning Tower of Pisa is an architectural marvel and cultural symbol that also represents the fascinating balance between human cleverness, historical difficulties, and scientific progress. This enchanting building is frequently referred to as the Torre Pendente di Pisa and was designed typically for a bell tower which was intended for use with the Pisa Cathedral that had been devoted to the Assumption of Virgin Mary. Amid these architectural complications, the Leaning Tower of Pisa rose as a striking representation of human desire and versatility. The building’s construction, characterised by halting starts and stops; as well its noticeable creep reveals something about the people who built it – intent upon lifting their city to new heights. As the white and grey marble stands sentinel, it narrates a tale that extends beyond mere bricks and mortar, embodying the spirit of Pisa through the ages.  Once we look into the 11 things to know about this extraordinary tower, a very vibrant history is revealed by an irregular construction schedule , enigmatic architects and relentless attempts to correct the leaning nature.

Leaning Tower of Pisa: Why is it still standing
Leaning Tower of Pisa| Courtesy: USA Today

1. Original Purpose

The Leaning Tower of Pisa was envisioned as a grandiose campanile, a freestanding bell tower intended to complement the Pisa Cathedral, dedicated to the Assumption of the Virgin Mary. Its purpose was clear—to house the bells that would resonate through the city, marking both religious ceremonies and civic events. The grand project commenced in the 12th century, an ode to the visionary aspirations of the time.

2. Construction Time

The construction of the tower, however, unfolded across the span of almost two centuries, from 1173 to 1372. This protracted timeline reflects not just the architectural complexity of the project but the numerous interruptions that punctuated its progress. Each passing year left an indelible mark on the tower, shaping its distinctive identity and contributing to its unique narrative.

3. Architect Identity

Attributing the Leaning Tower’s design to a single architect proves elusive. While Bonanno Pisano is often regarded as the primary architect, the true identity of those involved in different phases of construction remains shrouded in uncertainty. The scarcity of complete historical records from that era adds an air of mystery, suggesting collaborative efforts by multiple architects, each contributing to the evolving vision of the tower.

4. Leaning Begins Early

As construction progressed, an unforeseen challenge emerged—the tower began to lean, defying the intentions of its builders. Unstable subsoil and 3 m shallow foundations were the cause of the movement. Later tower engineers made up for this by designing upper stories with one side being shorter than the other. This indicates that the structure is both leaning and curved.

5. Interruptions in Construction

The Leaning Tower of Pisa faced numerous interruptions, mirroring the tumultuous historical backdrop of Pisa. Wars, financial constraints, and political unrest repeatedly halted construction, introducing a fragmented chronicle of starts and stops. Each interruption not only extended the construction timeline but also left an indelible mark on the tower, embodying the resilience of both structure and city.

Pisa - Leaning Tower - Construction History | 200 Years of l… | Flickr
Pisa – Leaning Tower – Construction History | Courtesy:  Flickr

6. Materials Used

Crafted from a combination of white and grey marble, the Leaning Tower’s aesthetic brilliance is a testament to the artistry of its builders. Its eight stories showcase a sophisticated architectural fusion. The base features blind arcades adorned with classical motifs, marrying Romanesque and Gothic influences. As one ascends, the tower evolves, revealing open galleries that add a layer of intricacy to its visual appeal.

7. Bell Chamber

 At the pinnacle of the Leaning Tower of Pisa, a captivating chamber houses seven bells, each with its own unique purpose. Among them, the largest is known as the “Great Bell,” a majestic addition made in 1655. These bells historically played a crucial role in the city’s life, tolling to mark significant events, religious ceremonies, and civic gatherings. The resonance from the bell chamber echoes through the ages, connecting visitors with the tower’s rich past.

8. Height and Tilt

The Leaning Tower of Pisa stands as both a statement  of  architectural ingenuity and the unpredictability of geological foundations. The tower, reaching approximately 56 meters (183 feet) on the higher side and 55.86 meters (183.27 feet) on the lower side, holds a subtle tilt of about 3.97 degrees. This slight but distinctive inclination is a consequence of the tower’s foundation settling unevenly during its construction, leading to its characteristic lean.

9. Efforts to Correct Tilt

The tower’s lean has been a source of fascination and concern for centuries, prompting various attempts to correct its tilt. Notably, in the late 20th century, engineers undertook a comprehensive stabilization project. Soil extraction from the higher side and strategic adjustments to the upper floors were employed to counteract the lean. This meticulous effort successfully arrested the tower’s gradual tilt, ensuring its stability and preserving its iconic slant for future generations to marvel at.

10. Visitors Annually

Despite its architectural anomaly, or perhaps because of it, the Leaning Tower of Pisa remains one of the world’s most visited and recognised landmarks. Annually, millions of curious travellers and enthusiasts from all corners of the globe make a pilgrimage to Pisa to witness this leaning marvel firsthand. The tower’s tilt, once a potential flaw, has transformed into a unique feature that adds to its allure, making it a symbol of resilience and human adaptability.

11. Scientific Experiments

In 2003, scientists embarked on a daring endeavour to further mitigate the tower’s tilt. Armed with innovative techniques, counterweights, and soil extraction methods, a scientific experiment was conducted to fine-tune the tower’s lean. The results were groundbreaking— the experiment proved successful, achieving a reduction in the tower’s tilt by a small margin. This scientific intervention not only showcased human determination to master architectural challenges but also underscored the ongoing commitment to preserving the tower’s structural integrity.

In addition to being a remarkable example of mediaeval architecture, the Leaning Tower of Pisa is a symbol of human tenacity and scientific advancement. Its bells sing out the ages, its tilt relates a story of building difficulties, and the continuous attempts to stabilise it present a tasteful fusion of science, engineering, and history. The leaning tower of Pisa is a timeless emblem of perseverance and an unwavering curiosity with the wonders of the globe, drawing millions of tourists each year.

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