The dome of St. Sophia at Constantinople is an oblate semi-spheroid 104 feet in diameter, 201 feet high.
It is said to be built of earthenware and pumice-stone, not of cut stone.
It was built in the sixth century.
The dome in the Duomo of Florence was built by Brunelleschi in 1417.
It is of brick, octagonal in plan, 139 feet in diameter, and 310 feet in hight.
The dome of St. Peter's, at Rome, was built at the close of the sixteenth century, from designs left by Michael Angelo.
It is 139 feet in diameter, 330 feet high.
The dome of St. Paul's, at London, by Sir Christopher Wren, is not masonry, but a shell inclosing the brick cone which supports the lantern.
It is 112 feet in diameter, 215 feet high.
Internal Diameter.Internal Hight.
Mosque of Achmet, Constantinople92120
Duomo at Milan57254
Hall aux Bles, Paris, by Moulineau200150
St. Isaac's, Petersburg96150
Baths of Caracalla112116
The dome of the Capitol, Washington, is 287 feet 11 inches