Fodor's Expert Review Parc Léopold

This tranquil park, just next to the EU Quarter, has a strange history of failures. First, it was a poorly maintained 19th-century pleasure garden, then home a zoo in which most of the animals died (its two entrance pavilions date from this era). By the 1930s, thankfully, it found its purpose and became an important scientific library and institute, around which a pair of museums were later added. It's largely peaceful except at lunchtime, when seemingly every corner is invaded by local schoolkids.