The Sacred Heart Cathedral (Katedrala Srca Isusova) is the largest cathedral in Bosnia and Herzegovina and the Catholic seat of Sarajevo, built in the 1880s during the Austro-Hungarian administration that followed the Ottoman period. The building is neo-Gothic in style — twin towers, pointed arches, stained glass — and looks somewhat unexpected against the Ottoman character of the surrounding old town, which is exactly the point: the Austrians wanted to mark their arrival architecturally.
The interior is cool and well lit, with a decent collection of stained glass windows and some competent ecclesiastical art. The best view of the facade is from Ferhadija Street, the pedestrian promenade that runs alongside it. The cathedral is still in active use as a parish church; masses are held daily and the building is generally open to visitors outside service times.