The main development of the city has been to the north of the river, which is crossed by numerous bridges and flanked by fine quays and promenades. The Altstadt, though several broad streets have been opened through it, still preserves many of its narrow alleys and other medieval features. The Judengasse (Ghetto), down to 1806 the sole Jews' quarter, has been pulled down, with the exception of the ancestral house of the Rothschild family--No. 148--which has been restored and retains its ancient facade. As the Altstadt is mainly occupied by artisans and petty tradesmen, so the Neustadt is the principal business quarter of the city, containing the chief public buildings and the principal hotels. The main arteries of the city are the Zeil, a broad street running from the Friedberger Anlage to the Rossmarkt and thence continued, by the Kaiserstrasse, through the fine new quarter built after 1872, to the magnificent principal railway station; and the Steinweg and Goethestrasse, which lead by the Bockenheimer Tor to the Bockenheimer Landstrasse, a broad boulevard intersecting the fashionable residential suburb to the N.W. _Churches._--The principal ecclesiastical building in Frankfort is the cathedral (Dom). Built of red sandstone, with a massive tower terminating in a richly ornamented cupola and 300 ft. in height, it is the most conspicuous object in the city. This building, in which the Roman emperors were formerly elected and, since 1562, crowned, was founded in 852 by King Louis the German, and was later known as the Salvator Kirche. After its reconstruction (1235-1239), it was dedicated to St Bartholomew. From this period date the nave and the side aisles; the choir was completed in 1315-1338 and the long transepts in 1346-1354. The cloisters were rebuilt in 1348-1447, and the electoral chapel, on the south of the choir, was completed in 1355. The tower was begun in 1415, but remained unfinished. On the 15th of August 1867 the tower and roof were destroyed by fire and considerable damage was done to the rest of the edifice. The restoration was immediately taken in hand, and the whole work was finished in 1881, including the completion of the tower, according to the plans of the 15th century architect, Hans von Ingelheim. In the interior is the tomb of the German king Guenther of Schwarzburg, who died in Frankfort in 1349, and that of Rudolph, the last knight of Sachsenhausen, who died in 1371. Among the other Roman Catholic churches are the Leonhardskirche, the Liebfrauenkirche (church of Our Lady) and the Deutschordenskirche (14th century) in Sachsenhausen. The Leonhardskirche (restored in 1882) was begun in 1219, it is said on the site of the palace of Charlemagne. It was originally a three-aisled basilica, but is now a five-aisled _Hallenkirche_; the choir was added in 1314. It has two Romanesque towers. The Liebfrauenkirche is first mentioned in 1314 as a collegiate church; the nave was consecrated in 1340.