Pianta Nuovissima,
2020

Newly drawn map of Rome, that's based on multiple sources:

Forma Urbis Severiana

(203-209 a.D.),

Nuova Pianta di Roma

by G. B. Nolli (1748),

Forma Urbis Romae

by Rodolfo Lanciani (1901),

Atlas of Ancient Rome

by Andrea Carandini et al. (2012),

Google Earth

and other individual sources. Black lines indicate existing structures, grey hatches show lost buildings since 1748 (Nolli) and red lines reconstruct ancient structures whose remains are partly visible today (not completed).