The Pantheon’s structural stability is due, in part, to the composition of its concrete.
The ancient Romans used a unique formula involving volcanic ash and aggregate to create a durable and resilient material. This mixture has contributed to the Pantheon’s longevity and endurance.
These under-the-radar European destinations offer unique experiences, rich history, and captivating landscapes without the crowds. Here are ten such lesser-known places that deserve a spot on your travel itinerary.