Fodor's Expert Review Ħal Saflieni Hypogeum

Carved under the town of Paola, a few minutes drive to the west of Cospicua, this massive labyrinth of underground chambers was used as a subterranean necropolis and funeral hall, dating from around 4,000 BC, and remains the only one of its kind in Europe. It reopened in 2017 following a year-long restoration (even the carbon dioxide exhaled by visitors can damage its walls), adding an audiovisual show that outlines its history. Many chambers are decorated with red ocher or fine carvings, including the Oracle Room which was cleverly shaped to amplify sound. Because of its delicate state, only 10 visitors per hour, for a maximum of eight hours a day, are allowed inside.  Book tickets for tours at least a month in advance.