His remains, with those of Frederick of Baden, still rest in the church of the monastery of Santa Maria del Carmine at Naples, founded by his mother for the good of his soul; and here in 1847 a marble statue, by Thorwaldsen, was erected to his memory by Maximilian, crown prince of Bavaria.
The Glyptothek, a building by Klenze in the Ionic style, and adorned with several groups and single statues, contains a valuable series of sculptures, extending from Assyrian and Egyptian monuments down to works by Thorwaldsen and other modern masters.
A handsome statue of Gutenberg, by Thorwaldsen, was erected at Mainz in 1837.
The Bethmann vault attracts attention by three bas-reliefs from the chisel of Thorwaldsen; and the Reichenbach mausoleum is a vast pile designed by Hessemer at the command of William II.
The cathedral is adorned with many valuable objects of art, paintings and sculptures, by such artists as Veit Stoss, Guido Reni, Peter Vischer, Thorwaldsen, &c. Part of the ancient Polish regalia is also kept here.
He was secretary to Thorwaldsen for a considerable time.
In the course of his visits to Italy he formed friendships with famous artists such as Thorwaldsen and Cornelius.