Berlin Stadtbahn
...that the Berlin Stadtbahn is built mostly as an elevated railway line with viaducts totalling eight kilometres of length, including 731 masonry viaduct arches?
...that the <b id="mwC5k"><a href="./Berlin_Stadtbahn" id="mwC5o" rel="mw:WikiLink" title="Berlin Stadtbahn">Berlin Stadtbahn</a></b> (<i id="mwC5s">pictured</i>) is built mostly as an elevated railway line with <a href="./Viaduct" id="mwC5w" rel="mw:WikiLink" title="Viaduct">viaducts</a> totalling eight kilometres of length, including 731 masonry viaduct arches?