Day 2

Sophia, with Fat Tire Bike Tours in Berlin, tells of the city's history.

Berlin's sidewalks are dotted with unique street art.

One of Berlin's most distinguishing features is its vast abundance of graffiti.

A U-Bahn station alerts passengers when the next tram will arrive.

Constructed in the '60s, the TV Tower (Fernsehturm) in Berlin's Alexanderplatz square stands about 1,200 feet tall and can be seen from just about every part of the city.

Bike tours are a popular way to get acquainted with city upon arrival.

Graffiti can range from a quick word to a mural that spans stories.

The Berlin Tempelhof Airport closed in 2008, and its runways and adjoining fields are now used as recreational areas.

Berliners recreate on what used to be a Berlin Tempelhof Airport airstrip.

The eagle is a prominent German symbol.

Berliners gather in Alexanderplatz square on May 17, 2014, to celebrate gay pride and encourage equal laws and treatment.

Berliners gather in Alexanderplatz square on May 17, 2014, to celebrate gay pride and encourage equal laws and treatment.

Berliners gather in Alexanderplatz square on May 17, 2014, to celebrate gay pride and encourage equal laws and treatment.

Berliners gather in Alexanderplatz square on May 17, 2014, to celebrate gay pride and encourage equal laws and treatment.

Berliners gather in Alexanderplatz square on May 17, 2014, to celebrate gay pride and encourage equal laws and treatment.

Berliners gather in Alexanderplatz square on May 17, 2014, to celebrate gay pride and encourage equal laws and treatment.

Berliners gather in Alexanderplatz square on May 17, 2014, to celebrate gay pride and encourage equal laws and treatment.

Berliners gather in Alexanderplatz square on May 17, 2014, to celebrate gay pride and encourage equal laws and treatment.

Berliners gather in Alexanderplatz square on May 17, 2014, to celebrate gay pride and encourage equal laws and treatment.

Berliners gather in Alexanderplatz square on May 17, 2014, to celebrate gay pride and encourage equal laws and treatment.

Berliners gather in Alexanderplatz square on May 17, 2014, to celebrate gay pride and encourage equal laws and treatment.

A dog plays with a ball during the gay-pride rally.

Berliners release balloons in Alexanderplatz square on May 17, 2014, to celebrate gay pride and encourage equal laws and treatment.