What to wear in the Domus Aurea: it is about 10°C down there
Two reviewers on the same tour put this from opposite ends of the year, and both are right. Kelly went in June and wrote that “the temperature inside was a great reprieve from the heat”. Amanda ended her review with “bring a sweater because it was quite chilly underground”. Ninety minutes at ten degrees is a pleasure when Rome is at thirty-five and an ordeal when you have turned up in February in a linen shirt.
The August problem and the January problem
They are opposite and people get both wrong. In a Roman August you leave the hotel in 35 degrees, spend ninety minutes at ten, and come back out into the heat. Carry the layer even though carrying it feels absurd at street level. In January the gap is smaller but the visit is longer than your body expects to stand still in the damp, and the layer you would wear for a walk is not the layer you want for standing under a vault. This is the most common thing I have watched go wrong on other people’s visits, and it is entirely avoidable.
Footwear, seriously
Uneven and damp is the honest description of the floors, and you are walking barrel-vaulted corridors and the cryptoporticus for most of the visit — what you are walking through. Closed shoes with a sole that grips. Not sandals, not smooth leather, not anything you would mind getting dusty. This is an active excavation with scaffolding and props in the rooms, which is also why the visit is guided.
The hard hat
It is issued at the entrance and it is worn for the whole visit. Not optional, not decorative. Practically, that means leave the sun hat in your bag, and if your hair takes up vertical space, know that the helmet does not negotiate. It sits on everybody and everybody looks the same in it, which I find is the quickest way to stop a group being self-conscious about it.
Bring
- A warm layer, whatever the weather is doing above ground
- Closed shoes with grip
- A small bag you can carry hands-free
- Something to tie long hair back under the helmet
Leave it
- Sandals, flip-flops or smooth soles
- A sun hat or anything else on your head
- Anything you would mind getting dusty or damp
- Heels, on floors described as uneven
What works
- Around 10°C is a relief in a Roman summer and a good reason to book a July or August slot
- The hard hat is provided, so there is nothing to buy or carry
- Ninety minutes is short enough that one good layer covers it
- It is entirely indoors, so rain outside is irrelevant
Worth knowing
- Genuinely cold in winter, and people consistently underdress
- Damp as well as cold, which makes ten degrees feel lower than it reads
- Uneven floors rule out most of what people wear for a Roman summer
- The helmet is compulsory and does not accommodate other headwear
If you are visiting in summer, book the earliest slot you can and treat the Domus Aurea as your midday heat escape. Ninety minutes at ten degrees in the middle of a Roman August is a better plan than anything you would otherwise be doing at that hour.
Frequently asked questions
How cold is it inside the Domus Aurea?
Around 10°C year-round, according to the archaeological park’s own page, and damp with it. Bring a layer regardless of the weather above ground — the visit lasts an hour and a quarter to an hour and a half.
What shoes should I wear?
Closed shoes with grip. The floors are uneven and damp and you are in a working excavation for the whole visit — see what you walk through.
Do you have to wear a hard hat in the Domus Aurea?
Yes. Hats are issued at the entrance and worn throughout, because it is an active archaeological site. That also means no other headwear: why every visit is guided.
Is it cold enough to matter in summer?
Yes, and pleasantly so. Ten degrees after a Roman August afternoon is a shock in the right direction, but carry the layer rather than admiring the idea of it — see is it worth it.