Hamilton Mausoleum in Lanarkshire. Picture: Colin Mearns/The Herald IT is a familiar sight to the thousands of motorists who pass by on the M74 each day, the 120ft-high domed structure of the Hamilton Mausoleum. Before the motorway ever existed, the distinctive building – within the grounds of the former Hamilton Palace – was a Lanarkshire landmark, holding a world record for the longest echo recorded within a man-made structure (usurped by Inchindown oil tanks at Invergordon in 2014). Built as a tomb and monument to Alexander, 10th Duke of Hamilton during the mid-19th century, its design is testament to his zest for history, travel and fine art.