Remarkably for a city as big as Berlin (it is the second-largest in Europe), almost all the main sights can be covered on foot. And as 20th century history is etched upon Berlin's topography like nowhere else, this tour really is a must-do for every first-time visitor. You will see places of tremendous resonance:  the Brandenburg Gate, the Reichstag, the Berlin Wall, the site of Hitler's bunker, and many more. In revealing the layers of the city's complex history, we will neither shy away from difficult issues nor lose sight of what makes Berlin such a vibrant and exciting place today.  ​