Thermae Bath Spa

Thermae Bath Spa sits in the Hetling Pump Room complex on Hot Bath Street, built around Britain's only naturally warm, mineral-rich thermal waters. The main draw is the open-air rooftop pool, where bathers soak in the warm water with views over the city by day or after dark. Inside, the New Royal Bath houses the Minerva Bath and a wellness suite, plus steam rooms as part of the thermal circuit.

This is a walk-in, day-pass spa rather than a members-only club, and it's priced in the moderate range. It's strictly adults only, with a minimum age of 16 for general admission and 18 for treatments; proof of age is checked at the door. There's a Springs Café on site for food and drinks between sessions, so a visit can run from a couple of hours to most of a day.

Beyond the soak itself, the spa also offers treatment packages that can be added to a standard session, and the rooftop pool is occasionally closed temporarily for maintenance or unforeseen issues, so it's worth checking current status before travelling in specifically for that feature. Hours run 9am to 9pm every day of the week, with phone bookings and enquiries handled on 01225 331234.