The Tromostovje (Triple Bridge) is a group of three bridges across the Ljubljanica River, connecting the historical center with the more modern parts of Ljubljana. The central bridge - then called Lower Bridge - was opened in 1842, replacing an old wooden medieval bridge, which was already mentioned in 1280. This Lower Bridge had two arches and a metal fence.

In order to prevent the ‘1842 bridge’ becoming a bottleneck the famous Slovene architect Joze Plečnik designed in 1929 the two side bridges for pedestrians. Construction started in 1931 and continued until spring 1932. Nowadays the Triple Bridge is part of the pedestrian zone of the city. From each of the side bridges, two stairways lead to terraces situated just above the river

The central bridge is partly built from limestone. Other parts are built from concrete. The ‘fences’ with 642 balusters are made of artificial concrete. The platform is covered with granite blocks laid in 2010. The bridge was renovated in 1992.