The cathedral of St. Isaac’s at St. Petersburg is of comparatively modern origin, being completed in 1801, the former one built in 1710 being destroyed by fire. The proportions are grand and the porticoes noble. The cupola, which is 296 feet high, supported by thirty polished granite pillars, is covered with copper overlaid with gold, and glitters brightly. The screen is supported by malachite columns 30 feet high, and on either side of the door of the screen there are pillars of lapis-lazuli. Into the inmost shrine or sanctuary women are not admitted. The most effective portion of the service in the Greek Church is the singing, boys always taking the soprano parts. Certain half-recitative solos are delivered by deacons with very strong and deep bass voices. One of the most impressive parts of the service occurs when the doors of the ikonostas or screen are shut; the chanting then ceases, the incense-bearers withdraw, and every one seems breathless with attention. The royal doors are then opened in the centre, and the chief officiating priest, attended by deacons, comes forward, carrying the Holy Eucharist, and commences a long recitative, which is a prayer for the Emperor and Imperial Family. While this prayer is intoned the audience bend low in attitudes of adoration. The outward forms of the service are joined in by the men as well as the women with great fervour. The first proceeding on entering a Russian church is to purchase a wax candle. With this the worshipper slowly approaches one of the shrines. He sinks on one knee, bowing his head to the pavement, and crossing his breast repeatedly with the thumb and two forefingers of his right hand. Having reached the shrine, he then lights his votive candle at the holy lamp, and sets it up in one of the various holes in a large silver stand provided for the purpose, falling at the same time on his bended knees on the pavement before the altar. He then says his prayers and retires slowly with his face to the altar, kneeling and crossing himself at intervals. The kindling of lamps and tapers is a custom in all Russian churches.

THE CATHEDRAL OF ST. STEPHEN’S OF VIENNA.

The cathedral at Vienna was begun in 1359, and has much rich tracery and curious carvings. The giant portal is a triumph of Gothic ornament. The lofty nave has rich sculpture and rich tinted glass, two of the windows being rose. The tower is a masterpiece, and is 444 feet high, and it is now made useful by the fire brigade as a watch-tower, there being a station half-way up, and watchmen posted there night and day.

THE MOSQUE OF ST. SOPHIA, CONSTANTINOPLE.

The cathedral of old Constantinople, dedicated by Constantine to the Eternal Wisdom, now turned into a mosque, was first built in 325. It was burnt down and rebuilt in 415, and again in 532 and 548. Justinian at the last date restored it and placed it on a magnificent footing. He was proud of the structure, and boasted that he had vanquished Solomon. The marble columns were the admiration of the world, every variety of marble, granite, and porphyry being used: white marble with rose-coloured stripes, green and blue, and white marble with black veins. There were eight porphyry columns used which Aurelius had taken away from the Temple of the Sun at Baalbec. This church, when restored by Justinian, was the theatre of great and solemn State affairs. It was said to have had a hundred architects, and the plan had been laid down by an angel who appeared to the Emperor in a dream. A second angel appeared to a boy when guarding the workmen’s tools, and insisted on the works being rapidly completed. The building was afterwards completed, except as to the cupola, and an angel for the third time appeared, and as the works were stopped for want of money, led the mules of the Treasury to a subterranean vault, where 80 cwt. of gold was concealed, whereupon the building advanced with great speed. The Emperor and the architect having differed as to the position of certain windows admitting light, the angel again appeared and instructed the Emperor that the light should fall upon the altar through three windows, in honour of the Trinity. The altar was to be more costly than gold, and was one mass of precious stones. Above the altar rose a tabernacle crowned with a golden cross weighing 75 lbs., and adorned with precious stones. The doors were of ivory, amber, and cedar. The church was opened in 548. The building is nearly a square. Fergusson (on Architecture) doubts whether any Christian church of any age exists whose interior is so exquisitely beautiful. It contains among the relics the cradle of the Saviour and a basin in which the Infant was washed by Mary.

THE MOSQUE OF OMAR.

The Saracenic cupola of the Mosque of Omar may be said to defy comparison even with the proud domes of St. Sophia, St. Peter, and St. Paul. The marble octagon from which that cupola springs into the air with the Arabesque frieze and circle of pointed windows has nothing in Europe excelling it in either grace or strength.

THE CHURCHES OF JERUSALEM.

Though the site of the Holy Sepulchre has not been clearly established, there was a church erected over the supposed spot by Constantine in 326, and rebuilt in 614, and again in 1048. The church remained in the same state as the Crusaders left it till 1808, when it was partly destroyed by fire and rebuilt. The church is nearly of an oval shape. In the centre of the rotunda is the Holy Sepulchre, covered by a building 26 feet long by 18 feet wide, cased in white stone, with semicolumns and pilasters. The sepulchre proper is a vault 6 feet by 7 feet. Over it lamps of gold and silver burn with a brilliant light. The vault was said to be hewn out of the rock, but no rock is seen, all being marble. A round marble stone let into the pavement marks the spot where Christ appeared to Mary Magdalene, and even the exact spot is shown where Mary stood. The Chapel of the Apparition marks the spot where Christ appeared to His mother after the Resurrection. Near that spot St. Helena laid the crosses after she had discovered them. The column of flagellation is represented by a fragment of porphyry covered over, and the pilgrim can insert his staff in a hole and touch it, which he usually does, and then kisses the staff. Adjoining are various chapels: the Chapel of St. Helena, the Chapel of the Invention of the Cross and of the Elevation of the Cross, and the Chapel of the Crucifixion. The latter stands on the spot where Christ was nailed to the cross. In the south wall is a barred window, marking the place where the Virgin Mary stood during the Crucifixion.

THE CHURCH OF THE NATIVITY OF BETHLEHEM.