Charles Rennie Mackintosh designed these former offices of the Glasgow Herald newspaper in 1893, with its emblematic Mackintosh Tower. Today it serves as Scotland's Centre for Architecture, Design and the City, which celebrates all facets of the architectural field. Regular and changing exhibitions on its second floor address issues of urban design and sustainability. On the third floor, the Mackintosh Interpretation Centre is a great starting point for discovering more about this groundbreaking architect's work, illustrated in a glass wall with alcoves containing models of his buildings. From here you can climb the more than 130 steps up the tower and, once you have caught your breath, look out over Glasgow. The fifth-floor Doocot Cafe is a great place to take a break from sightseeing. Building tour cost £5.