Mount to the Upper Chapel (or Sainte Chapelle proper) by the small spiral staircase in the corner. This soaring pile was the oratory where the royal family and court attended service; its gorgeousness bespeaks its origin and nature. It glows like a jewel. First go out of the door and examine the exterior and doorway of the chapel. Its platform was directly approached in early times from the Palace. The center pillar bears a fine figure of Christ. In the tympanum (as over the principal doorway of almost every important church in Paris and in the district) is a relief of the Last Judgment. Below stands St. Michael with his scales, weighing the souls; on either side is depicted the Resurrection, with the Angels of the Last Trump. Above, in the second tier, is Christ, holding up His hands with the marks of the nails, as a sign of mercy to the redeemed: to right and left of Him angels display the Crown of Thorns and the True Cross, to contain which sacred relics the chapel was built. On the extreme left kneels the Blessed Virgin; on the extreme right, Sainte Geneviève. This scene of the Last Judgment was adapted with a few alterations from that above the central west door of Notre Dame, the Crown of Thorns in particular being here significantly substituted for the three nails and spear. The small lozenge reliefs to right and left of the portal are also interesting. Those to the left represent in a very naïve manner God the Father creating the world, sun and moon, light, plants, animals, man, etc. Those to the right give the story of Genesis, Cain and Abel, the Flood, the Ark, Noah's Sacrifice, Noah's Vine, etc., the subjects of all which the visitor can easily recognize, and is strongly recommended to identify for himself. The interior consists almost entirely of large and lofty windows, with magnificent stained glass, in large part ancient. The piers which divide the windows and alone support the graceful vault of the roof, are provided with statues of the twelve apostles, a few of them original. Each bears his well-known symbol. Spell them out if possible. Beneath the windows, in the quatrefoils of the arcade, are enamelled glass mosaics representing the martyrdoms of the saints--followers of Christ, each wearing his own crown of thorns: a pretty conceit wholly in accord with St. Louis's ecstatic type of piety. Conspicuous among them are St. Denis carrying his head, St. Sebastian pierced with arrows, St. Stephen stoned, St. Lawrence on his gridiron, etc. The apse (formerly separated from the body of the building by a rood-screen, now destroyed), contains the vacant base of the high altar, behind which stands an arcaded tabernacle, now empty, in whose shrine were once preserved the Crown of Thorns, the fragment of the True Cross, and other relics.