7 Fascinating Insights About the Louvre Pyramid

Essential Highlights

Three decades since its debut, the Louvre Pyramid graces the entrance of the world's most frequented museum, swiftly cementing its place as an indispensable feature of Paris' iconic skyline. Competing with the Eiffel Tower and the Arc de Triomphe for recognition as Paris' most famous monument, the Pyramid was unveiled in 1989 and immediately sparked controversy, contrary to the creators' intentions.

Designed by the late I.M. Pei, a Chinese-American architect and co-founder of Pei Cobb Freed & Partners, the glass-and-metal structure crowns the Louvre's subterranean, yet luminous, lobby. This space links the museum's three main sections — Denon, Richelieu, and Sully. With a square foundation and a height of 71 feet (21 meters), its proportions echo a scaled-down version of the Great Pyramid of Giza.

Originally built as a fortress in the 12th century, the Louvre Museum transitioned from a royal palace to a public museum in 1793 following the French Revolution. But how did a contemporary interpretation of ancient Egyptian architecture find its way into Paris? Here are seven intriguing details about this iconic structure.

1. It Was Built To Serve a Purpose

Though celebrated as an architectural masterpiece, the Pyramid was designed with practicality in mind. French President François Mitterrand introduced the Grand Louvre project in 1981, aiming to revamp the museum and expand its capacity. This included repurposing the Richelieu Wing, previously occupied by the Ministry of Finance. Upon the Grand Louvre project's completion, the museum's exhibition space doubled, with the Pyramid serving as the main entrance and providing access to its three pavilions.

"The project required over 92,000 square meters [990,279 square feet] of floor area," Pei explained in Philip Jodidio's 2009 publication "I.M. Pei: The Louvre Pyramid."

"Given the constraints of the Louvre's surroundings, constructing such a vast space above ground was unfeasible, so we opted to place it underground beneath the courtyard ... We explored numerous shapes, including a cube and a curved, hemispheric design. However, the Louvre's architecture lacks curves, so we ruled them out. Ultimately, the pyramid emerged as the sole viable option. It was the most fitting choice."

2. It Was Called an "Architectural Joke"

Mitterrand personally chose Pei for the Grand Louvre project, bypassing the typical architecture competition used for major public works, a move that "angered many," as reported by Architect Magazine. Pei's design faced nearly as much backlash as Mitterrand's decision, drawing widespread criticism.

"I anticipated controversy in this case, and I wasn't shocked when we faced criticism," Pei remarked to Jodidio.

Upon its initial unveiling, the Pyramid "ignited significant media debate and stirred strong emotions, both aesthetically and technically," as stated in a Louvre press release.

Today, however, the Pyramid is a cherished element of Paris' skyline, much like the once-controversial Eiffel Tower. While Captain Bezu Fache describes it as "a scar on the face of Paris" in the "Da Vinci Code" movie, a 2010 Arch Daily article notes that "the contrast between the modern structure and the museum's French Renaissance architecture creates a harmonious effect, highlighting the unique beauty and details of both designs."

3. It's Actually Too Small Now

Although the Pyramid was designed to enhance visitor reception and added 650,000 square feet (60,386 square meters) of underground space, the Grand Louvre project's accommodations have already been outpaced by the museum's surging popularity.

In 1989, the Louvre attracted million visitors, but by 2018, that number soared to 10.2 million. To manage this overwhelming influx — averaging over 27,000 visitors daily if open year-round, which it isn't — the museum underwent reorganization from 2014 to 2016.

The Pyramid Project streamlined visitor movement by redesigning entrances and reception zones. Key upgrades included two soundproof information desks integrated into prominent pillars, enhanced signage, revamped ticketing areas, and other modifications, effectively doubling access control at the Pyramid entrance.

4. New Glass Was Developed to Build It

Pei demanded absolute transparency for the Pyramid's glass to ensure no visual distortion of the Palace when viewed through it. Achieving this clarity was a significant challenge, as glass typically has a slight bluish or greenish hue. To overcome this, he partnered with Saint-Gobain, a French manufacturer, to develop a unique glass tailored for the project.

"Months of intensive research were dedicated to creating this 21.5-millimeter [0.8 inch] ultra-clear laminated glass, known for its outstanding mechanical strength and superior optical clarity," Patricia Marie, Saint-Gobain's communications director, stated in an email. "The glass was specially treated to remove iron oxides, eliminating any greenish tint."

Perfecting the glass took approximately two years, necessitating the construction of a custom furnace to eliminate iron oxides. The resulting "Diamond Glass" is laminated similarly to car windshields, ensuring that if shattered, the plastic layer holds the fragments together. The pyramid features 19,375 square feet (1,800 square meters) of glass, comprising 675 rhombus-shaped "lozenges" and 118 triangular panels, according to Marie. These are supported by a framework of 6,000 metal bars, bringing the Pyramid's total weight to 200 tons (180 metric tons). Saint-Gobain produced enough glass to construct two pyramids as a precaution, though no repairs have been necessary in over three decades.

5. Cleaning It Is a Monumental Task

While the Louvre Pyramid has avoided the need for glass repairs, maintenance remains a significant challenge. Cleaning a 71-foot sloped structure is no simple task. Traditional methods like boom systems, scaffolding, or lift buckets are ineffective for such a unique design.

Initially, professional climbers were hired to scale the Pyramid and clean the glass, but an automated solution became essential. In the 1990s, a robot was created for this purpose. Later, in 2002, Seattle's Advanced Robotic Vehicles introduced a new model, a compact, remotely controlled robot that ascends the Pyramid on tracks and adheres to the glass using suction cups. Equipped with a squeegee and rotating brush, it handles the cleaning efficiently.

However, certain tasks defy automation, as Marie notes. The water features near the Pyramid produce a mist that leaves tartar deposits on the glass, requiring periodic descaling. "Rope access technicians are still needed to repair the joints," she explains. "Only a human can perform this delicate work."

6. Its Design Aligns with French Tradition

Although the Pyramid appears to contrast with the museum's French Renaissance style, it aligns with certain French architectural traditions. According to W. Jude LeBlanc, an associate professor at Georgia Tech School of Architecture, Pei's choice of a pyramid was deliberate. France has a historical connection to Neoclassical ideals and Platonic solids, and while the Pyramid isn't a tetrahedron due to its square base, it reflects this cultural and architectural heritage.

"Visionary and inventive, Neoclassical architects of the late 18th century, including Boullée, Lequeu, and Ledoux, explored pyramidal shapes for monuments, cenotaphs, and other structures," LeBlanc states.

When the Pyramid debuted in 1989, The New York Times observed that it "harmonized" with Paris' existing landmarks and noted that France's architectural legacy was "rich with allusions" to architects who "frequently employed stark geometric forms, such as pyramids."

LeBlanc also highlights that Napoleon's Egyptian campaigns influenced certain 19th-century Empire-style designs. Additionally, the Louvre is just a short distance from the Place de la Concorde, home to a 3,300-year-old obelisk transported from Luxor Temple in 1833 and installed by King Louis-Philippe.

7. It's Not the Louvre's Only Entrance

While the Pyramid serves as a primary entrance for visitors, it isn't the sole access point to the Louvre — and sometimes it isn't the most efficient. Given the museum's immense popularity, purchasing tickets online ahead of time is highly advised. Securing a ticket for a designated date and time slot ensures entry in under 30 minutes.

Upon arriving, even those with pre-booked tickets may find themselves in a queue, often near the Pyramid. However, visitors with individual or group tickets can use the Passage Richelieu entrance, located near the Rue de Rivoli, opposite the Palais Royal-Musée du Louvre metro station. Another option is the Carrousel du Louvre, an underground shopping and dining area established in 1993, which offers direct museum access and features the Inverted Pyramid. Regardless of the entrance chosen, all paths lead to the central lobby beneath the Pyramid, providing seamless access to the museum's three wings, as Pei envisioned.