The Neues Palais, a larger and grander palace than Sanssouci, stands at the end of the long avenue that runs through Sanssouci Park. It was built after the Seven Years' War (1756–63), when Frederick loosened his purse strings. It is said he wanted to demonstrate that the state coffers hadn't been depleted too severely by the long conflict. Impressive interiors include the Grotto Hall with walls and columns set with shells, coral, and other aquatic decorations. The royals' upper apartments have paintings by 17th-century Italian masters. You can tour the palace yourself, with an audio guide, from April through October; the rest of the year you must be accompanied by a tour guide; the cost is €8 for either option.
If you reach the Neues Palais by foot from Sanssouci, you'll pass some other ornate structures on the way: The Chinesisches Teehaus (Chinese Teahouse, €2) was erected in 1754 in a Chinese style that was all the rage at the time. It houses porcelain from
Meissen and Asia. The curious Drachenhaus or "Dragonhouse" was modeled in 1770 after the Pagoda at London's Kew Gardens and named for the gargoyles ornamenting the roof corners. It now houses a popular restaurant and café. The two-story Belvedere on Klausberg (€2) is impressively situated at the top of a hill, at the end of a tree-lined boulevard which starts at the Orangerie near Sanssouci and then juts northwest. There's not much to see inside but the lookout over the park is lovely.