One of Karl Friedrich Schinkel’s finest buildings, the Konzerthaus (1821) rose from the ashes of Carl Gotthard Langhans’ Schauspielhaus (National Theatre). Schinkel kept the surviving walls and columns and added a grand staircase leading to a columned portico.
Free 30-minute "walk-throughs" (no reservation needed) take place almost daily. Full 75-minute tours (in German and English) cost €3 and usually run at 1pm on Saturday.