In the Course of History – The STEIN in February 2025

Building design
The colonnades on Berlin's Museum Island have seen a lot since their construction around the middle of the 19th century. Their columns were so badly damaged and their substance so deteriorated that a master plan was needed to reassemble them into the unique ensemble that Friedrich August Stüler had designed them to be. Instead of replacing parts, severely damaged components were recently dismantled, renewed as faithfully as possible and later reinstalled - always in close consultation with the Monuments Office. © SPK Florian Gärtner

In this restoration issue, STEIN features the colonnades in Berlin, where the final phase of work to restore them to their original condition has been completed. Just around the corner in Potsdam, we take a look at the Campanile, whose tower has been completely renovated. Another restoration project takes us to Halberstadt, where the north facade of the cathedral needs to be renovated. A model axis is intended to serve as a guide for the entire project. Also groundbreaking is a digital reconstruction of the interior of Cologne Cathedral, which offers a new perspective on the Gothic masterpiece in its original form.

Restoration expertise is essential for preserving our cultural heritage for future generations. This applies not only to restorers but also to the stonemasonry trade. We’ve taken a look around for you and selected projects for this special issue in which the restoration of natural stone has played an important role.

Focus on Natural Stone

Starting on page 6, our author Dr. Inge Pett guides you through the colonnades on Berlin’s Museum Island. Here, the final phase of construction to restore the site to its original condition has been completed. The 19th-century colonnades are a defining feature of the UNESCO World Heritage Site Museum Island Berlin. As part of the Museum Island Master Plan, they—along with the other open spaces—are being restored. Previously, the majority of the colonnades along the Spree, Bodestraße, and the Neues Museum, as well as the Colonnade Courtyard, had already been restored by 2010.

In the neighboring city of Potsdam, the campanile has been restored to its former glory. Thanks to a fundraising campaign, the tower of the Friedenskirche, which dates back to 1850, has been completely renovated. Read more about this ambitious construction project starting on page 14.

Ambitious Restoration

Another restoration project takes us to Halberstadt. There, the Saxony-Anhalt Cultural Foundation has initiated the restoration of the cathedral’s north facade and has erected scaffolding around a buttress for this purpose. During the first phase of construction, a reference axis was established there to guide future work on the facade. The buttress was systematically examined, documented, and treated from the bottom up to the level of the side aisle’s eaves. You can read more about this starting on page 46.

Renovation in Saxony-Anhalt

Another groundbreaking project is a digital interior reconstruction of Cologne Cathedral, created by architectural historian Dr. Dorothea Hochkirchen and architecture student Konstantin Kruse. Their work revealed that this Gothic masterpiece once looked far more spectacular than previously thought.

The STEIN editorial team wishes you

The STEIN Editorial Team Redaktion@stein-magazin.de

The issue is availablehere!

In our latest issue, 01/25, we explore art in form. Read more about it here.

A New Look

Restoration expertise is essential for preserving our cultural heritage for future generations. This applies not only to restorers but also to the craft of stonemasonry. We’ve taken a look around for you and selected projects for this special issue in which the restoration of natural stone played an important role. […]

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Zaha Hadid builds Tokyo’s Olympic Stadium – but not after all

Building design

Back to square one in Tokyo: Zaha Hadid Architects will not be building the central stadium for the 2020 Olympic Games after all.

It’s back to square one in Tokyo: Zaha Hadid Architects will not be building the central stadium for the 2020 Olympic Games after all. Japan’s Prime Minister Shinzo Abe has now declared that the entire process will be reset to zero for cost reasons. “We are starting all over again,” the Guardian quotes the Japanese politician as saying. So there will probably be a new competition.
Ultimately, however, the ever-increasing construction costs are likely to be just one reason for the decision. Architecturally, the extravagant building (Hadid, that is) also came in for a lot of criticism – not least from other architects. Arata Isozaki had described Hadid’s design as a turtle just waiting for Japan to sink into the sea so it could swim away. Pritzker Prize winner Fumihiko Maki had organized a symposium against the design, which was attended by Toyo Ito, Kengo Kuma and Sou Fujimoto, among others. A petition against the building was also initiated.
Patrik Schumacher, the first architect in Zaha Hadid’s office, apparently holds this architect-dominated counter-movement partly responsible for the decision. He wrote on Facebook: “Maki and Ito will be remembered for this.”

The center of Berlin remains green

Building design
The perspective shows the planned steps on the banks of the Spree.

1st prize to Büro RMP Lenzen: Steps on the banks of the Spree with a view of the cathedral (Visualization: RMP Lenzen)

RMP Stephan Lenzen win the open space competition for the City Hall and Marx-Engels-Forum in Berlin: The office won against 52 other entries.

It’s all about a prominent area in Berlin’s historic center: sandwiched between the new Humboldt Forum and the television tower, the Rathaus- and Marx-Engels-Forum are getting a new design. The RMP Stephan Lenzen office has won the competition for the green center of Berlin.

Where the roots of the city of Berlin lie, there will soon be no new construction. The open spaces of the Rathaus-Forum and Marx-Engels-Forum will remain green. However, the area will be given a new design, which will result in a flight of steps leading down to the adjacent Spree. The Berlin Senate Administration invited people to take part in a competition in the spring. After an initial phase, citizens were allowed to have their say. A total of 21 landscape architecture firms then developed their ideas further in the second phase of the competition. The landscape architects from RMP Stephan Lenzen ultimately won over the jury. They proposed a central ribbon that connects listed areas of the Rathausforum with the Marx-Engels-Forum. This green ribbon ends in a large staircase on the banks of the Spree. Opposite, on the other side of the water, the eastern façade of the new Humboldt Forum shines.

The open space in the middle of old Berlin used to be called “Park an der Spree”. As one of the most central green spaces in the Mitte district, it dates back to the Second World War. It damaged the Heilig-Geist-Viertel, which ultimately prompted the GDR leadership to demolish it. Since then, the area between Karl-Liebknecht-Straße in the north, the park by the television tower in the east, Rathausstraße in the south and the Spree in the west has remained undeveloped. For a long time, there was an ensemble of monuments in the middle of the area, but this had to be moved to the north-western edge when the subway was built. The future of the Marx-Engels Forum has been under discussion since the 1990s. The ideas were many and varied. They ranged from the reconstruction of the Heilig-Geist-Viertel to the design of a park at the Marx-Engels-Forum. The latter ultimately prevailed.

Marx-Engels-Forum competition brief

The design of a park on the Marx-Engels-Forum now had to be fleshed out as part of the ideas and realization competition. The participants were asked to engage with the place where Berlin was founded, the historical layers hidden in the ground and the surrounding area. At the end of the long debate about the future of this site, citizens’ guidelines for the future development of the Rathaus Forum and the Marx-Engels Forumwere drawn up . These guidelines state that an open space should be designed that does justice to the dimensions and significance of the location and strengthens the identity of the site. In addition, it should bring the eventful history to life and at the same time enable diverse and intensive uses.

In the first phase, the competition initially asked for a vision and an idea for the entire Marx-Engels-Forum. Only the participants in the second phase had to derive their vision. In addition, they outlined an intermediate state for the year 2030 in the ideas part of the competition. In a third realization part, the concrete implementation for 2024 was then to be shown. This step-by-step approach is based on the intended gradual realization of the project. This will take a long time. Accordingly, the ideas must be based on a clear approach and offer a great deal of flexibility for process-based implementation.

The landscape architects from RMP Lenzen provided the most convincing solution for the new design of the Rathaus- and Marx-Engels-Forum. They designed an open space that is characterized by a striking figure. The plan is to keep the Rathaus- and Marx-Engels-Forum free of buildings. The green space promises a high quality of stay with areas for strolling, relaxing and enjoying spectacular views of the cathedral, Humboldt Forum and television tower. RMP Lenzen is equipping the new space with plenty of greenery and lots of shady trees. But water is also included, which contributes to cooling as well as infiltration areas that fit in with future rainwater management. Overall, the contribution to the Marx-Engels-Forum competition envisages a modern, climate-resilient urban space that enables a variety of uses.

Good things take time

The idea of initially creating a green space in the heart of old Berlin preserves opportunities for future generations. For the near future, the jury recommended that the first prize-winning work by RMP Lenzen be realized. This brings a controversial debate to an end. Hardly any other place in Berlin has experienced more planning and discussions than the Marx-Engels-Forum. But for the building senator, it is clear that the city of Berlin has done the right thing. After the fall of the Wall, it did not rush into planning. Now, against the backdrop of current plans for Alexanderplatz and Molkenmarkt and against the backdrop of climate adaptation and the mobility turnaround, things can be designed in peace.

Would you like to find out more about projects in the capital? We have summarized the next planning steps on the former Berlin Tegel airport site for you.