This image from a level above , shows an overview of Trajan's market.
In the curved street area can be seen the remains of several bronze horses.

The entrance to Trajan's Market is on a back street behind the area seen in this image
It is tricky to find the entrance, which is on the lower level in this image,
which is just a part of the multi-level complex that originally contained shops taverns and offices.
It is built at the base of the Quirinale hill, part of which was excavated for building of the complex.

In the early 20th c., the ruins of the Forum and Market were cleared, but little of the Market has been restored.