Seven highlights of visiting Dresden 1. Zwinger: To visit the Zwinger is to dive into Dresden’s baroque heyday. Built as a party pad for royals in the 1700s, when Augustus the Strong sat on the throne (his own residence, Dresden Castle, stands behind the Zwinger and is also worth visiting), the lavish, sculpture-studded palace complex surrounds an enormous courtyard filled with fountains. It now houses three museums: the Gemäldegalerie Alte Meister (Old Masters Picture Gallery), in which hang celebrated artworks including Raphael’s Sistine Madonna; the Porzellansammlung (Porcelain Collection); and the Mathematisch-Physikalischer Salon, which displays a curious collection of telescopes, clocks and globes.  2. Procession of Princes: This 335ft-long mural presents Saxony’s rulers…