The Temple can be visited
Tempio di Venere e Roma (Temple of Venus and Roma)
In Rome, on the slope of the Velia, are the remains of the Temple of Venus and Roma. It was once the largest temple in the city, uniting the veneration of the city goddess Roma with the cult of Venus.
History+
In 121 AD, Emperor Hadrian began the construction of this temple. Its completion occurred under his successor Antoninus Pius. For its erection, the entrance hall of Nero's Domus Aurea had to be demolished, with parts of its foundations being reused. The temple's architecture leaned more towards Greek than Roman building principles, evident in the absence of a high podium.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: http://commons.wikimedia.org/wiki/File:VenereERoma2.JPG?uselang=de
This description draws on the facts documented in the linked Wikipedia article; Wikipedia content is licensed under CC BY-SA 4.0. Wording and editing: Mobile History.
Location: 41.8909, 12.4897