Got it! Here's your updated 2-day itinerary for Berlin, with the Berlin Cathedral removed and an afternoon pub crawl added. I’ve also included a visit to the unique bar built from a bunker!

Friday: Arrival & Evening ExplorationAfternoon Arrival:

• Check-in to Accommodation: Choose a centrally located hotel or Airbnb in areas like Mitte or Kreuzberg for easy access to major attractions.

Evening (5 PM - 8 PM):

1. Brandenburg Gate:
   
   • Start your visit with the iconic Brandenburg Gate. It’s especially striking at dusk when it’s beautifully lit. Take in the historical significance and snap some photos in front of this symbol of Berlin.
2. Walk along Unter den Linden:
   
   • From Brandenburg Gate, take a stroll along Unter den Linden, a grand boulevard that leads to many historic sites. You’ll pass by the famous Berlin State Opera, the Humboldt University, and eventually, the Berlin Cathedral (view from the outside).
3. Dinner at Zur letzten Instanz:
   
   • For a taste of authentic Berlin cuisine, dine at Zur letzten Instanz, a charming historic restaurant dating back to 1621. It’s one of the oldest in the city, serving classic German dishes like sauerbraten (marinated beef roast) and knödel (dumplings).

Late Evening (8 PM - 10 PM): 4. Explore Brandenburg Gate and Pariser Platz at Night:

• After dinner, return to Brandenburg Gate to experience it illuminated at night. Pariser Platz, the square around it, is also a beautiful place to walk around. If you're in the mood, you can grab a drink at one of the nearby rooftop bars with a view of the gate.

Saturday: Iconic Sights and Pub Crawl AdventureMorning (9 AM - 12 PM):

1. Reichstag Building (German Parliament):
   
   • Start your day by visiting the Reichstag Building, one of the most iconic structures in Berlin. The glass dome offers a stunning view of the city. You can book a free visit to the dome online, but be sure to do this in advance. If you have time, take a guided tour to learn about Germany’s political history.
2. Holocaust Memorial (Memorial to the Murdered Jews of Europe):
   
   • A short walk from the Reichstag is the Holocaust Memorial. This somber, striking place consists of 2,711 concrete slabs of varying heights and serves as a memorial to the Jewish victims of the Holocaust. Spend some time reflecting on this powerful monument.
3. Brandenburg Gate & Tiergarten Park:
   
   • Head over to Tiergarten Park, just behind Brandenburg Gate. It’s the largest park in Berlin, perfect for a peaceful walk and relaxation in the green space.

Lunch (12 PM - 1 PM):

• Lunch at House of Small Wonder (Mitte):
  • For a laid-back and delicious lunch, head to House of Small Wonder in the Mitte district. This charming café offers a selection of fresh, creative dishes like Japanese-style pancakes, sandwiches, and salads. The interior has a cozy, eclectic vibe, perfect for refueling after a busy morning.

Afternoon Pub Crawl (1:30 PM - 5:30 PM): Now, let’s dive into an afternoon pub crawl! Here’s a selection of bars, including the bunker bar:

1. Bar Tausend (Mitte):
   
   • Start your pub crawl at Bar Tausend, an upscale and trendy bar located near the Friedrichstrasse station. It’s an elegant, hidden spot with a stylish interior and delicious cocktails. It’s a great place to start your Berlin drinking experience.
2. Prater Garten (Kreuzberg):
   
   • Next, head to Prater Garten, Berlin's oldest beer garden, located in the heart of Kreuzberg. Here you can enjoy a cold beer in a relaxed and historic atmosphere. It's a fantastic place for a casual stop and some outdoor vibes.
3. Bunker Bar (Mitte):
   
   • Make your way to the Bunker Bar (also known as Das Bunker), a unique spot in Berlin. Located in a former World War II bunker, this bar has been transformed into a modern, atmospheric venue with cocktails and an intriguing, industrial vibe. It’s one of the coolest and most unusual spots in the city.
4. Friedrichshain (Boxhagener Platz):
   
   • If you have time, end your crawl in the Friedrichshain area, known for its eclectic mix of bars and vibrant atmosphere. Café Bar Maybach offers cocktails with a twist, and the area around Boxhagener Platz is full of cool, laid-back bars to wrap up the afternoon.

Evening (6 PM - 8 PM): 5. Dinner at Markthalle Neun (Kreuzberg):

• For dinner, make your way to Markthalle Neun in Kreuzberg. This historic market hall offers a wide variety of delicious food from local vendors. From hearty German meals to international street food, you’ll find a lot to sample here. The atmosphere is lively and authentic.

Late Evening (8 PM - 10 PM): 6. Night Out in Kreuzberg:

• After dinner, explore Kreuzberg, one of Berlin’s most vibrant neighborhoods. It’s known for its lively nightlife, cool bars, and artistic vibes. If you’re into alternative culture, this is the place to be. You can grab a drink at Prater Garten, Berlin's oldest beer garden, or head to Klunkerkranich, a rooftop bar offering amazing views of the city.

Sunday: Relaxing & Exploring Local Life Before DepartureMorning (9 AM - 11 AM):

1. Explore Prenzlauer Berg:
   
   • On your last morning, head to Prenzlauer Berg, a trendy neighborhood known for its charming streets, boutique shops, and café culture. You can wander around, stop for coffee, and enjoy the relaxed vibe of this part of Berlin.
2. Mauerpark:
   
   • If you’re there on Sunday, you can check out Mauerpark, famous for its flea market and vibrant street performers. It’s a lively spot where you can enjoy a bit of local culture, browse the stalls, and maybe even catch a live karaoke session.

Brunch or Light Lunch (11 AM - 12 PM):

• Brunch at Father Carpenter (Mitte):
  • Head to Father Carpenter, a trendy café in Mitte, for a great brunch. They offer delicious coffee, freshly baked pastries, and hearty brunch options like avocado toast and eggs benedict, perfect for a light, relaxed final meal before departure.

Departure:

• Head back to your accommodation to collect your bags and head to your next destination.

This itinerary gives you the best of Berlin's landmarks, local life, and a fun afternoon pub crawl with a visit to the unique Bunker Bar! Enjoy your time in Berlin!