A walk through nature and archaeology

A visit to Villa Gregoriana is a journey through waterfalls, grottoes and ancient temples, along trails that drop into and climb back out of the Aniene gorge. This isn't a museum but a park to be walked, where every bend reveals a new view. Here's what not to miss.

The Great Waterfall

The highlight is the Aniene's Great Waterfall (Grande Cascata), roughly 120 m high: the largest waterfall in Tivoli, engineered in the 1800s by diverting the river. From the park's many viewpoints you can take in the full force of the cascade, the spray and the roar filling the gorge. It's a natural (and engineering) spectacle that's worth the trip on its own. We cover it in depth here: the Great Waterfall.

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The grottoes

As you head down the trails, you reach the atmospheric grottoes carved into the rock by the water:

  • Neptune's Grotto (Grotta di Nettuno), where the Aniene rushes through the rocks.
  • The Grotto of the Sirens (Grotta delle Sirene), with its swirling water play.

These are dramatic, misty corners tucked into the greenery, showing the river's power to shape stone.

The Temple of the Sibyl and the acropolis

Climbing the far side of the gorge brings you to the ancient acropolis of Tivoli, with the remains of its Roman temples:

  • The Temple of the Sibyl (Tempio della Sibilla), rectangular in plan.
  • The famous Temple of Vesta (Tempio di Vesta), round, one of Tivoli's most photographed monuments, perched above the gorge.

This is the most striking viewpoint, where archaeology and landscape come together.

The trails and viewpoints

The whole park is a sequence of scenic trails, bridges, stairways and viewpoints over the waterfall and the gorge. The walk, deep in the vegetation, is part of the experience itself: a romantic route that enchanted Grand Tour travelers back in the 1800s.

How to plan your visit

  1. Start from the viewpoints over the Great Waterfall
  2. Head down to Neptune's Grotto and the Grotto of the Sirens
  3. Climb up toward the acropolis with its Roman temples
  4. Admire the Temple of Vesta overlooking the gorge
  5. Enjoy the trails and the scenic vistas

Frequently asked questions

What is there to see at Villa Gregoriana? The Aniene's Great Waterfall, Neptune's Grotto and the Grotto of the Sirens, the Temple of the Sibyl and the Temple of Vesta on the acropolis, and the scenic trails through the gorge.

What is the Great Waterfall? The Aniene's cascade, roughly 120 m high, created in the 1800s: the largest waterfall in Tivoli and the heart of the park.

What are the grottoes? Caves carved into the rock by the water, such as Neptune's Grotto and the Grotto of the Sirens: dramatic spots along the gorge trails.

What is the Temple of Vesta? A round Roman temple on the acropolis of Tivoli, perched above the gorge: one of the area's most photographed and atmospheric monuments.

How much time do you need? About 1.5–2 hours for the full route, allowing for the elevation changes and stops at the viewpoints.

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Article #572 · Category: Day Trips · Updated: May 2026