These cost nothing and carry a full day each. Build around them and the paid tickets become optional extras instead of a budget drain.
TipThe gate is free, open, and never closes, so come at sunrise or after dark for the floodlit columns without the daytime tour-group crush on Pariser Platz. It stood in the no-man's-land of the divided city, and the square today puts you steps from the Reichstag and the Holocaust Memorial, so chain all three in one loop. Skip the costumed characters offering photos, they expect payment.
TipThis 1.3 km stretch of the surviving Berlin Wall, painted with murals including the Brezhnev-Honecker kiss, is free and open air 24 hours along the Spree in Friedrichshain. Come early morning to photograph the famous panels before the crowds and before people stand in front of every one. Walk it from the Ostbahnhof end toward the Oberbaumbrücke, then cross the bridge into Kreuzberg for lunch.
Memorial to the Murdered Jews of Europe
FreeTipThe field of 2,711 concrete stelae is free, open, and always accessible, a short walk south of the Brandenburg Gate. Walk into the middle where the ground dips and the blocks rise over your head to feel the disorientation the design intends, and keep it respectful, this is a memorial, not a playground. The free underground Information Centre beneath it closes some days and has its own security line, so check before you go.
TipThe reconstructed guard hut and famous sign are free but pure tourist theater now, with paid actors in uniform you should not tip for photos, so treat it as a five-minute stop. The real substance is the free open-air panels along the street and the nearby (paid) Mauermuseum if you want the escape-story detail. Pair it with the Topography of Terror a short walk west for a much stronger Cold War morning.
TipThe grand Protestant cathedral on Museum Island charges about 10 EUR entry, which includes the climb up 270 steps to the outdoor dome walkway for a close view over the island and the Spree. Go for the dome balcony more than the interior, the panorama across the rooftops is the real draw. It closes to visitors during services, so check the schedule if you come on a Sunday.
TipBerlin's huge central park is free and stretches from the Brandenburg Gate to the Zoo, ideal for a walk or a rented bike between the Mitte sights and Charlottenburg. Climb the Victory Column (small fee) in the middle for a view down the tree-lined avenues, or find the beer garden at Café am Neuen See on the southern edge in warm months. On a summer Sunday you will see locals grilling on every patch of grass.
TipOften called the city's finest square, this symmetrical space framed by the German and French cathedrals and the Konzerthaus is free to stand in and photograph, best in the low light of early morning or evening. In December it hosts one of Berlin's best Christmas markets, which charges a small entry fee to keep the crowds manageable. It is a two-minute walk from the Französische Straße U-Bahn and close to Gendarmenmarkt's upscale cafes.
TipThis decommissioned airport is now a vast free public park where you can walk, cycle, or skate straight down the old runways, a genuinely Berlin experience with no equivalent elsewhere. Rent a bike and ride the full length of a former runway, or bring a picnic and watch the kite-surfers on windy days. It closes at dusk with gates that lock, so check the seasonal closing time posted at the entrances before you settle in.