Sanssouci Castle - Potsdam, Germany. Frederick the Great of Prussia built the palace as his summer escape, where he could live without a care - 'sans souci'. While Sanssouci is in the more intimate Rococo style and is far smaller than its French Baroque counterpart, it too is notable for the numerous temples and follies in the park.
Top free things to do in Berlin! Stroll the East Side gallery. A colourful memorial to freedom, the East Side Gallery sits along the Spree River and is the longest remaining section of the Berlin Wall. In the wake of the declassification of the wall, more than 100 artists from all over the world made their mark, turning it into an open-air gallery covered in declarations of peace and other politically minded murals and graffiti.