Carved into the cliffs of the Bock promontory, the Bock Casemates are a network of underground tunnels and galleries that once formed part of Luxembourg's formidable fortifications. This UNESCO World Heritage site offers a unique glimpse into the military engineering of the past and breathtaking views over the Alzette valley.

Best Time/Season to Visit:
The Bock Casemates are best visited from spring to early autumn, when the weather is pleasant for exploring the extensive tunnels and enjoying the scenic views.