Noted one of Berlin's most important landmarks, Brandenburg Gate is the last remaining gate from medieval times. Located on Pariser Platz, this site is a must-see, and it's free.
One of the largest and well-respected museums in Berlin, Pergamon opened its doors in 1930. If you can only tour one museum, choose this one. It is located on Museum Island.
Opened more than 150 years ago, the Berlin Zoo is one of the largest zoological gardens in the world. It is located in the southwest portion of the Tiergarten in central Berlin.