[5] Possibly in connection with the cult of Diana Nemorensis, Roman emperor Caligula built several very large and costly luxury barges for use on the lake.

They were destroyed by fire on 31 May 1944, it is disputed whether this was done by defeated German forces retreating from Italy at the end of World War II or accidentally by squatters taking refuge in the museum building.

Surviving remnants from the excavations as well as replicas are now displayed in the Museo Nazionale Romano at the Palazzo Massimo in Rome.

Nemi itself is home to a few late medieval to 18th‑century churches, and the Castello Ruspoli, dominating both town and landscape, the core of which dates to the 10th century.

Nemi's strawberries are grown on the sides of the volcanic crater, which creates a microclimate that retains the warmth of the sun and provides a wind shield.