An old watchtower from the 16th-century now watches over sulfur springs and one of Lazio's last coastal woodlands.

One of the largest squares in Europe contains an entire artificial island.

Built as a defensive structure, this medieval walkway road offers a unique view of the village of Brisighella.

This crystal clear water basin feeds the Lao river and powers a hydroelectric power plant.

This ancient city was home to one of the greatest schools of Greek philosophy.

Two of the few remaining life-sized Greek bronzes were submerged in the sea for over 2,000 years.

This site marks the oldest known settlement in Campania, inhabited around 9,000 years ago.

A floating bridge leaning on barges allows pedestrians to reach the historical center.

This hermitage spanning an Italian river gorge draws pilgrims hoping to heal ailments like arthritis and migraines.

A prehistoric route that has claimed many victims is now closed to traffic.

An ancient Egyptian obelisk is now used to commemorate fallen Italian soldiers.

Once the hunting reserve of a noble family, this is one of the few remnants of Pleistocene planitial forest in northern Italy that still stands.

Three underground crypts and a pointed arch under the bell tower make this cathedral unique among Romanesque churches.

One of the oldest still-working clocks in the world sits on an ancient tower.

In Majella National Park, these stone dwellings harken back to the region's pastoral history.

This stretch of the ancient Roman road is preserved in a valley that witnessed many battles and legendary highwaymen.

An omelette made with over 1,000 eggs may have been prepared when Holy Roman Emperor Charles V visited this monastery.

A strange-looking 18th-century tower sits on a tiny islet just off Livorno.

A fairy-tale-like forest that was sacred to Jupiter and Saint Anthony.

This archaeological site built into a tuff outcrop is filled with rock dwellings, the ruins of a medieval castle, and a necropolis.

This lake was sacred to the Sabine people who constructed a temple here on a floating island.

Nobles would stage mock naval battles on this large lake at the Royal Palace of Caserta.

Its look is severe, but its location, isolated on a hill in the middle of the countryside, is particularly scenic.

This caldera was once associated with the Etruscan god of the underworld.