Berlin, and what it does with what's left over

Berlin has an unusual quantity of leftover material. Buildings nobody wanted. A border nobody could quite bring themselves to erase. Twenty-six million cubic metres of bombed brick that had to go somewhere after 1945. What makes the city worth three or four days is not the material itself — plenty of places have ruins — but the habit Berlin has developed of handing that material back to whoever will use it. An airport became a place to fly kites. A spy station became a paint wall. A market hall a supermarket chain nearly bought is now the reason people cross town on a Thursday evening.

Start on the runway

Tempelhof airport closed in 2008. Two years later the city opened the airfield as a park and changed almost nothing about it. The runways are still runways, and people skate down them, ride kite buggies along them and cycle the perimeter past a flock of sheep that has been grazing one section since 2019. In May 2014 Berliners were asked in a referendum whether the edges could be built on; they voted no, and the result hardened into a law protecting the whole three-hundred-hectare field. That is why it does not read like a park. There are no trees to speak of and no shelter — just a horizon in the middle of a capital city. Go at seven on a summer evening when the light runs flat along the tarmac.

The rest of the airfield's history is signposted around the perimeter and worth reading before you lie down on it: aviation started here in the 1880s, the Nazis built the curved terminal in the late 1930s, the site held forced-labour camps during the war, and in 1948 it was where the Berlin Airlift landed.

The wall, at the length it was actually built

Most of the Berlin Wall is gone, and the fragments left standing around the city are short enough to be photographed in one frame, which quietly misrepresents the thing. The East Side Gallery does not. It runs 1,316 metres along Mühlenstraße by the Spree — the longest continuous stretch still standing — and in 1990, in the months after the border opened, 118 artists from 21 countries painted it end to end, opening it as a gallery that September.

Two of the paintings you will recognise before you get to them: Dmitri Vrubel's Brezhnev and Honecker kissing on the mouth, and Birgit Kinder's Trabant coming through the concrete. The rest you will not, and that is the argument for walking the whole length rather than stopping at the famous panels. It is free and it never closes; early morning is when you can actually read it. The Berlin Wall Foundation has looked after conservation since 2018, which matters because paint on an outdoor wall does not survive thirty-five Berlin winters unattended.

The hill that isn't a hill

Out west, where the city runs into the Grunewald forest, there is a hill that should not exist. Teufelsberg was assembled between 1950 and 1972 out of the war rubble Berlin had nowhere to put — around twenty-six million cubic metres of it, tipped over the buried remains of a Nazi military college that had proved too solid to demolish. From the early 1960s until 1990 the Americans and the British ran a listening station on top, aimed east. The towers are still there.

It is a strange place to spend two hours. The white radome fabric is torn and moves in the wind, the interiors are covered floor to ceiling in spray paint, and from the platform at the top you can see how much forest Berlin actually sits inside. It opens daily at 11 and costs €12.

Where the reuse was deliberate

The Reichstag is the one building where all of this was done on purpose and at expense. Norman Foster finished the glass dome in 1999, and its argument is structural: two spiral ramps take the public up and around, a mirrored cone at the centre pushes daylight down into the debating chamber, and everyone walking the ramp is physically above the parliament they can see working below. Entry is free, and you have to register in advance — in summer, weeks in advance. It is open until midnight, and the top of the ramp after dark is a better view than the paid towers charge for.

Museum Island is a short walk away. Note before you plan around it that the Pergamonmuseum is shut until June 2027. Go to the Neues Museum instead. Stüler built it in the 1850s, bombs gutted it, and David Chipperfield's reconstruction deliberately left the damage showing — you climb past shrapnel-pitted brick and half-lost frescoes. At the top, in a domed room of her own, is the bust of Nefertiti, made around 1350 BC and dug out of the sand at Amarna between 1911 and 1913. No photographs are allowed in that room, which is the reason it is quiet.

Eating, drinking, and the parts nobody built for visitors

Markthalle Neun in Kreuzberg went up in 1891, sat mostly empty by 2011, and was hours from being sold for a supermarket when three locals bought it instead. Street Food Thursday started there in spring 2013 and still runs from five until ten; the rest of the week it is a working market with a lunch counter. Two U-Bahn stops away, the Türkischer Markt sets up along the Landwehrkanal every Tuesday and Friday, where you buy bread and cheese rather than a plated lunch.

For a drink, Klunkerkranich is on the fifth floor of the Neukölln Arcaden car park on Karl-Marx-Straße; you take the shopping centre lift to the roof. It runs mid-April to the end of September, with DJs from the afternoon and a view over the rooftops.

And when it is hot, Berliners leave. The S1 runs to Schlachtensee in Zehlendorf, two minutes downhill from the platform: forest on all sides, rowing boats for hire and a beer garden in a fishing lodge that has stood there since 1750. Swimming is free and the water is tested all summer.

Putting a day together

The shape that works: Museum Island and the Reichstag dome in the morning while you still have patience for queues, Markthalle Neun or the canal market for lunch, then something horizontal in the afternoon depending on the weather. Teufelsberg is a half-day of its own and wants dry ground underfoot. Klunkerkranich closes the evening without committing you to a 2am club.