Engelberg to Mt Titlis aerial cableway poster, Switzerland, 1928

This was opened the year before, and reached an elevation of 3,000 metres (10,000 ft) at the summit. Later (1967?) the system was upgraded and incorporated rotating floor cars offering a turning view. These have now been adopted in a number of spots around the world but Mt Titius is the father of the “rotair”.

That central graphic is rather cryptic.