Terme dei Papi
The Bullicame spring doesn't look like bathwater. It rises as a luminous white mass of calcium-crusted mineral deposits, registering 58°C before it floods into a two-thousand-square-metre outdoor pool where you can float in January with steam rising around you. Dante put this spring in the fourteenth canto of the Inferno, which tells you something about how long people have been staring at it.
Four kilometres west of Viterbo, Terme dei Papi is a working thermal spa built around a medieval papal palace — crenellated walls, cross-shaped windows, vaulted ceilings — that Pope Nicholas V commissioned in 1450. Beneath it, a natural cave reaches 48°C and smells of sulfur.
💛 What travellers fall for
Leave the silver jewelry in your bag — the sulfurous water will blacken it. Regulars book online the moment Saturday night tickets drop, since the late session (9 p.m. to 1 a.m.) empties out the day-trippers and the pool takes on a different quality entirely. The check-in number system runs in Italian only, so watch how the person ahead of you works it.
The story behind Terme dei Papi
Romans knew the Bullicame spring before the common era, but the site's papal chapter opens in 1235, when Gregory IX documented the waters' therapeutic properties. Boniface IX came to bathe in 1404, and by 1450 Nicholas V had ordered a full palace built on the site — the structure that still stands, its crenellated silhouette incongruous above the steam. Pius II later remodelled it.
For centuries the baths remained largely inaccessible. Then in 1989 a businessman named Socrate Sensi began a full renovation of what had been a municipal facility, reopening it to the public in 1993. Michelangelo, somewhere between 1496 and 1536, made two pen drawings of the baths; they now sit in a museum in Lille.
Good to know
The direct shuttle from Rome's Flaminio stop (Metro A) departs at 9 a.m. and returns at 4 p.m. — the combined ticket runs €27. The outdoor Monumental Pool closes Tuesdays for maintenance. The Hot Grotto requires a blood-pressure check before entry; budget an extra fifteen minutes for that on your first visit.
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What travellers say about Terme dei Papi
We often visit Terme de Papi. Great grotto! Mud rub and massage treatment was fantastic! Worth a swim! Highly recommended!
Thermal water were splendid water is at 58°c at the front of the pool then gradually cools down near the end. 12€ for one adult for 3hrs and 18€ for full day, for us 3hrs was more than enough. There is also a waterfall where thermal water falls and massages which was a gem.
I am extremely disappointed by the customer service I experienced when calling this spa. I contacted them simply to request basic information: whether the sauna was open today and what the daily price was. These are reasonable, standard questions for any potential customer. Unfortunately, the person who answered the phone was incredibly rude, dismissive, and unprofessional. Rather than providing the requested information or even responding politely, she abruptly hung up on me. I was genuinely shocked by the interaction. This experience reflects a serious lack of customer service training and basic courtesy. A spa is meant to represent relaxation, care, and professionalism, yet the behavior I encountered was the complete opposite. First contact with a business is critical, and in this case it was handled very poorly. As per all the reviews I agree it is not a pleasant place to visit. It is a real shame, as the quality of a spa is not only measured by its facilities but also by how customers are treated. I hope management takes this feedback seriously and invests in better staff training, because this level of rudeness is unacceptable and risks turning potential clients away before they even step through the door.
Booking took hours the day before, including organising the doctor visit (who was helpful and spoke great English). The packages are confusing and not clearly explained — several services I expected were not included. There’s also poor communication: for example, grotto access is limited to one visit only , but this isn’t explained at reception. Many basic things are charged separately (whirlpool, vascular path, sunbeds), which makes the whole experience feel overpriced and disorganised. The thermal pool is nice but quite shallow in the hotter areas, and having to carry a card instead of a bracelet is inconvenient. There were no proper bathrobes available — only one oversized option — which is not acceptable for a spa of this level. The shop also closed early in the afternoon. The only highlight was the mud massage by Laura — truly one of the best I’ve had.
It was a nice experience, but agreed with others that check in is very slow and the facilities are a bit old a run down. Honestly, I liked the grotto the best versus the actual pool.
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