Château de Chimay
Fodor's choice
The traditional home of the Princes of Chimay is a 15th-century, Renaissance-style castle that looms over the lower town. The first defense to stand here was likely built towards the end of the 9th century when this was part of the Frankish Empire. But over the years it has been endlessly rebuilt, including when a fire tore through the building in 1935. Today, it is still occupied by Prince Philippe and his family, and guided tours sometimes bump into them. The real showpiece here is the theater, built in 1863 as a grand neoclassical space wreathed in palm-tree columns and gold- and white-stucco reliefs. It even plays host to monthly jazz and classical concerts (book online). You'll also find minigolf and escape rooms in the grounds.
