Palermo’s Molo Trapezoidale: An Armistice in the Long Positional Struggle Between Port and City

8 Agosto, 2026

The inauguration of the Molo Trapezoidale (Trapezoidal Pier) on October 13, 2023, was not merely the completion of a public work; it marked a historic watershed for the city of Palermo. This monumental intervention stands as the culmination of a long and complex process of urban regeneration – a journey aimed at mending a profound, decades-long rift between the Sicilian capital and its most defining natural element: the sea. The infrastructure fits into a precise strategic vision launched in 2017, coinciding with the appointment of Pasqualino Monti as President of the Port Network Authority. From the outset, Monti placed a decisive focus not only on logistical enhancement but also on a deep environmental and social requalification of the city’s coastline.

The End of the “Couple’s Crisis” Between Port and City

To fully grasp the revolutionary scope of this intervention, it is necessary to take a step back and analyse the genesis of what urban planning defines as a true “couple’s crisis.” Following World War II, Palermo and its port ceased their dialogue. The sea, once a vital resource and the heart of city life, was transformed into an industrial backyard – inaccessible and hidden behind physical and visual barriers.
The epitome of this progressive alienation was the Molo Trapezoidale itself, an area that for nearly a century accumulated planning errors and historical amnesia. The original sin dates back to 1923, when a reckless political decision led to the demolition of a large part of the Castello a Mare (Castle by the Sea) to clear space for port activities. From that moment on, the grounds of the ancient fortress were progressively suffocated by haphazard construction that was functionally ineffective and visually degrading. The peak of this lack of vision was reached in the late 1980s with the installation of two massive dry-bulk cranes on the north quay. These towering machines were never actually used and defaced the coastal skyline for decades before being finally dismantled in 2018 – the first symbolic and practical act of this new era.

The Port Master Plan and the Vision of the “Liquid Port”

The current transformation finds its regulatory and theoretical foundation in the new Port Master Plan (PRP), approved in 2018 after a long and meticulous process. Drafted with the essential scientific support of Professor Maurizio Carta for the urban planning component, the PRP did not limit itself to reorganizing the quays. Instead, it reinterpreted the entire area under the Authority’s jurisdiction – stretching from Vergine Maria to Sant’Erasmo – as an ecosystem integrated with the city.

The philosophy underpinning the document rejects the total decommissioning of port functions (as seen in other European cities like London or Barcelona), opting instead for a harmonious coexistence. The preparatory studies, enriched by the research of the Officina di Architettura del Porto di Palermo (Palermo Port Architecture Workshop) between 2006 and 2008, led to a classification of the coastal space into three macro-areas:

  • The Rigid Port: The western zone, extending to the Vittorio Veneto quay, dedicated exclusively to heavy and commercial traffic and entirely inaccessible for civic use.
  • The Spongy Port: The central area destined for passenger and cruise traffic, characterized by a partial permeability toward the outside.
  • The Liquid Port: The stretch extending from the Molo Trapezoidale to Sant’Erasmo, passing through the Cala. Here, port and city merge. Boundaries dissolve, functions hybridize, and the space becomes freely accessible to the community, restoring Palermo’s vocation as a “City of Water.

The Architecture of the Trapezoidal Pier: A Project of Ground and Memory

Translating this complex theoretical framework into physical reality fell to the Technical Office of the Port Authority, led by Engineer Enrico Petralia, working in close synergy with the firm Provenzano Architetti Associati for the architectural and landscape design. The Integrated Port Transformation Project (PITP) provided the operational guidelines, while the detailed design defined the aesthetics and functions.

Building E1 E2, home of the Marina Conference Hall. (Photo: Francesco Ferla; © Provenzano Architetti Associati).

The master plan is largely configured as a refined “ground project,” where public space reclaims centre stage. From a material standpoint, the choice fell on strict landscape compatibility, limiting the palette to elegant, chromatically neutral elements: grey basalt stone (recalling the local Billiemi stone), weathered Corten steel for metallic details, and white plaster. This chromatic reduction allows the surrounding landscape to emerge without visual interference.

Three cornerstone elements define the redesign of the open spaces:

  • The Continuous Promenade: A pedestrian path that extends the promenade of the Cala, guiding visitors to the Sammuzzo Quay and ensuring total visual permeability between the urban and port environments.
  • The Archaeological Park: Arising from the initial excavations of 2009, the park recovers the perimeter of the Castello a Mare. Through careful uncovering operations agreed upon with the Superintendency, the ruins have been brought to light and enhanced, creating an open-air museum.
  • The Urban Lake: A large artificial lagoon that borders the ancient walls of the fortress. This mirror of water is not merely aesthetic; it recreates the original physical and perceptive contact between the castle and the liquid element.

Functional Mixité: The Waterfront’s New Buildings

The success of the regeneration also relies on the social reactivation of the area, achieved by applying the principle of functional mixité. The project includes nine buildings, almost all featuring a single above-ground story to preserve the landscape’s horizontality and vistas. These pavilions host diversified functions, encouraging continuous and varied public use:

Layout plan showing the distribution of the project buildings. (© Provenzano Architetti Associati).

  • Building E1/E2 (The Civic Heart): The main structure anchoring the north side of the new square, housing a conference hall, offices, and commercial activities. Its defining feature is a large, trapezoidal, tree-lined inner courtyard – a contemporary reinterpretation of the historic courtyards found throughout Palermo’s old town. The building rests on a basalt stone base and culminates in an open-air theatre facing Monte Pellegrino, offering a privileged vantage point over the city’s geography.
  • The Restaurant Buildings (E3, E4, E5): Positioned perpendicular to the main quay, these three volumes house small restaurants and bars. They are shielded by shading pergolas and connected at the roof level by a continuous walkway. This solution creates a striking, panoramic “ship’s deck” ideal for enjoying views of the gulf.
  • The Commercial Building (E6): Located along the edge of the urban lake, this building features a V-shaped floor plan. To avoid a massive visual impact, the structure is broken into trapezoidal blocks separated by small inner courtyards. The facades alternate between expansive transparent glass windows and opaque Corten panels, ensuring visual permeability toward the archaeological area.
  • The Club Houses (E7, E8, E9): Positioned in front of the floating docks and perpendicular to the castle walls, these three identical structures are designed as modern stilt houses. Their horizontal alignment remains independent of the sloped ground below, lending a sense of lightness to the intervention.
  • The Pre-existing Building (E13): In compliance with preservation principles, a pre-existing structure dedicated to nautical retail was partially demolished and remodelled. The intervention includes a renovated western facade and general extraordinary maintenance, preserving its original function.

The buildings housing the restaurant. (Photo: Francesco Ferla; © Provenzano Architetti Associati).

The retail block. (Photo: Francesco Ferla; © Provenzano Architetti Associati).

A Catalyst for the Future: The Project’s Ripple Effect

The Molo Trapezoidale is not an isolated work; it is proving to be a powerful catalyst for the surrounding urban fabric. The long wave of this regeneration is triggering new investment and redevelopment processes. The most emblematic case is the nearby Alessandro Volta Power Station, a jewel of industrial archaeology. A portion of the plant’s former offices was recently transformed into an “Ostello Bello” hostel – a modern accommodation option designed for youth that aligns perfectly with the city’s growing tourism profile and fosters a continuity of use along the waterfront.

One of the three clubhouse buildings. (Photo: Francesco Ferla; © Provenzano Architetti Associati).

This is joined by future projects, including a new hotel on the grounds of the former Magazzini Generali (General Warehouses) and the imminent regeneration of the Fish Market. This massive injection of new functions necessitates a rethinking of local accessibility. Targeted interventions are underway to optimize traffic flow between the Cala area and the city centre, facilitating pedestrian and vehicular movement while equipping the port with new parking facilities and infrastructures for sustainable mobility.

The transformation of the Molo Trapezoidale transcends simple architectural execution, embodying a true cultural redemption for Palermo. Through courageous strategic planning, elegant landscape choices, and a diversification of functions, the city has stopped turning its back on the sea. Today, the new waterfront stands as an international model of sustainable regeneration, proving that it is possible to heal the urban wounds of the past while restoring a deeply identity-rich, dynamic, and inclusive landscape to the community.

Glimpses of the Urban Lake. (Photo: Francesco Ferla; © Provenzano Architetti Associati).


HEAD IMAGE | Panoramic view of Palermo waterfront. (Photo: Hermes Pupella; © PPA).


FURTHER READING



Article reference for citation:

PROVENZANO, Sebastiano. “Il Molo Trapezoidale di Palermo come armistizio nella guerra di posizione tra porto e città”. PORTUS | Port-City Relationship and Urban Waterfront Redevelopment, 51 (August 2026). RETE Publisher, Venice. ISSN 2282-5789.
URL: https://portusonline.org/palermos-molo-trapezoidale-an-armistice-in-the-long-positional-struggle-between-port-and-city/

PROVENZANO, Sebastiano. “Palermo’s Molo Trapezoidale: An Armistice in the Long Positional Struggle Between Port and City”. PORTUS | Port-City Relationship and Urban Waterfront Redevelopment, 51 (August 2026). RETE Publisher, Venice. ISSN 2282-5789.
URL: https://portusonline.org/palermos-molo-trapezoidale-an-armistice-in-the-long-positional-struggle-between-port-and-city/