What cultural etiquette should I know for Berlin?

The first thing you'll notice is the directness. Berlin service staff won't hover or ask how your meal is every 5 minutes. That's not rudeness. It's the local default. A firm "Hallo" or "Guten Tag" when entering a smaller shop along Kastanienallee or a restaurant in Kreuzberg is expected, and you'll likely get a nod back. Handshakes are standard for introductions, brief and firm, with eye contact. One thing catches visitors off guard at dinner. When toasting, you look each person in the eye as you clink glasses and say "Prost." Failing to make eye contact during a toast is, according to persistent Berlin superstition, 7 years of bad luck in the bedroom. Whether anyone believes it, everyone follows it.

Tipping in Berlin has its own mechanics. You don't leave cash on the table afterward. When the server brings the bill, you tell them the total you want to pay. If the bill is €27.50, you say "Dreißig" (thirty) and hand over the money. That rounds up to about 9%, which sits right in the 5-10% range Berliners consider normal. For a coffee at a Kreuzberg café, rounding to the nearest euro is fine. "Stimmt so" means "keep the change." Card tipping is still unreliable at many smaller restaurants along Oranienstraße or in Neukölln, so carry coins. At bars, €0.50 to €1 per round is typical. Taxi drivers expect a similar round-up, maybe €1-2 on a €15 ride from Alexanderplatz.

Germany has laws that trip up tourists from countries with broader speech protections. §86a of the German Criminal Code makes displaying Nazi symbols or performing the Hitler salute a criminal offense carrying up to 3 years in prison. This applies to tourists at the Brandenburg Gate, at the Holocaust Memorial near Ebertstraße, everywhere. No exceptions for "ironic" photos. Jaywalking is technically legal in Germany but socially enforced. Berliners will glare, and sometimes lecture, if you cross on red when children are waiting at the intersection. Germans consider it modeling dangerous behavior for kids. On Sundays, Ruhezeit (quiet time) means no drilling, no loud music, no moving furniture. Your Prenzlauer Berg neighbors will knock on your door.

Berlin's comfort with nudity surprises many first-time visitors. FKK (Freikörperkultur, free body culture) areas exist in Tiergarten park and at lakes like Müggelsee and Schlachtensee on the city's outskirts. Nobody will bother you for swimming clothed, but don't stare or photograph people in FKK zones. Club culture runs on its own unwritten codes. At Berghain near Am Wriezener Bahnhof, phones go into pockets. Staff apply stickers over camera lenses at the door. Black clothing is the baseline, minimal logos. Being overly drunk or loud in the queue gets you turned away by the bouncers, who are famously selective. The rejection rate on a Saturday night likely sits above 50%.

Berlin is one of Europe's least religious cities. Around 60% of residents identify as non-religious. That said, the Berliner Dom on Museum Island and the Kaiser Wilhelm Memorial Church on Breitscheidplatz still expect covered shoulders during services. Remove hats inside any church. The bigger cultural norm is quiet. Apartment buildings post Hausordnung (house rules) in the lobby listing quiet hours, typically 22:00 to 7:00 on weekdays and all day Sunday. Running a washing machine on Sunday afternoon might seem harmless, but it tends to generate a passive-aggressive note taped to your door in neat German handwriting. The smell of Sunday Brötchen from the one open bakery is about the only acceptable noise.