Anyone can tell you, Berlin has much to offer. There is the famous Brandenburg Gate, the remains of the Berlin Wall, the Reichstag - Germanyâ€™s Parliament building and the Museum of the Wall at the infamous point once called â€œCheckpoint Charlie.â€ It takes more than a weekend to see the city. Berlin has both east and west sides to explore. Take a walking tour or ride a bus. Stroll along Unter den Linden, a wide tree lined street or visit Pergamon Museum with its 2nd B.C. Greek Pergammon Altar as well as other ancient antiquities. There is Potsdamer Platz, the central square of the city and the churches on Gendarmenmarkt square.