United Kingdom's Go Below offers adventure-packed cave tours in North Wales. But what made the company world famous is the unique accommodation set 1,375 feet (419 meters) below the ground level in an abandoned Victorian slate mine. Snowdonia's disused slate (a type of rock commonly used in construction) mines are …

Coal mining was the principal industry of the Limburg area. The Carbon Hotel takes its namesake from these seams of history that run through the rocks and culture of the area. Luckily that’s where the similarity with coal mining ends. Your room has an iPod dock, a BOSE Soundsystem, designer …