The Zwinger - a magnificent early 18th-century palace in the center of the city beside the Elbe - is one of the finest examples of Baroque architecture in Germany.
It's worth walking around the outside just to appreciate its architecture. On its south side is the majestic 32-bayed Long Gallery, and flanking it to the east and west are four symmetrically arranged pavilions, the Wallpavillon and the Nymphenbad (Bath of the Nymphs), with its graceful fountains and mythological figures.
Aside from its impressive architecture, the Zwinger houses more of the Dresden State Art Collections.