Resolution: 1/2 - Click the region of interest for enlargement.
Image rights
The Arch of Trajan, provided with a portcullis, as it appeared in the 18th century, etching by Piranesi. Some of the bas-reliefs are now in the British Museum. This work is in the public domain in the United States, and those countries with a copyright term of life of the author plus 100 years or fewer.