The mosaic floor
The mosaic floor
During the 1930s archaeologists Sir Mortimer Wheeler and his wife Tessa excavated large areas of the Roman town of Verulamium. One of their major finds was an 1800 year old underfloor heating system, or hypocaust, which ran under an intricate mosaic floor. The section of flooring we see today is only about half of the original floor.
The floor is composed of small tesserae, or cubes of stone or tile. The tesserare are set into a thin layer of mortar on top of a concrete underfloor. The mosaics were grouted with mortar and polished with fine-grained stones. They may have had a final polishing with beeswax to enhance the shine, much as we might apply polish to a modern floor.
The floor is thought to have been part of the reception rooms of a large town house, built around AD 200 near the route of Watling Street, the major Roman road that ran past Verulamium. The Wheelers decided to leave the mosaic in place rather than risk damage by moving it to a museum.
The central roundels
The central roundels
The floor is composed of a central section with 16 square panels, each containing a circular roundel with a geometric design. The borders are bands of single and double interlace and strips of wide and thin dark and light material.
Visiting
I must admit I wasn't impressed by the modern building that houses the hypocaust; from across the wide green expanse of Verulamium Park it looks like a whitewashed garden shed, built low to the ground, with a wide, projecting roofline. I'd have preferred something more in keeping with the Roma heritage of the site, but that's caring; for the actual mosaic and underfloor heating system are beautifully presented. You can walk around the outside of the mosaic on a galleried walkway, looking down onto the floor below.
Through rents in the mosaic you can see the hypocaust system beneath. As with many Roman mosaics in situ, this appears somewhat dusty, or faded, so you have to use some imagination to guess how it would have looked when freshly laid. It would have been mighty impressive! The design is fantastically intricate, and is a real pleasure to study. Each of the main 16 panels show a geometric design; there are no depictions of animals or gods; if anything, it looks like what you might see in a kaleidoscope. The attention to detail is staggering, and the effect really is very impressive.

As of this writing the hypocaust is open daily and admission is free, but please check official opening times. It is very easy to combine a visit to the hypocaust with a trip to the Verulamium Museum.

Geometric inner border
Geometric inner border
The outer mosaic border
The outer border
Exposed area of hypocaust
Exposed area of hypocaust
More of the central roundel designs
More of the central roundel designs
Look for the dip in the floor
Look for the dip in the floor

About Verulamium Hypocaust and Mosaic
Address: Verulamium Park, St Michael's Street, St Albans, Hertfordshire, England, AL3 4SW
Attraction Type: Roman Site
Location: Located within Verulamium Park, a short walk from the Verulamium Museum. Park in the museum car park (pay and display).
Website: Verulamium Hypocaust and Mosaic
Phone: 01727 751810
Location map
OS: TL135068
Photo Credit: David Ross and Britain Express


NEARBY HISTORIC ATTRACTIONS

Heritage Rated from 1- 5 (low-exceptional) on historic interest

St Albans Roman Wall - 0.1 miles (Roman Site) Heritage Rating

Verulamium Museum - 0.3 miles (Roman Site) Heritage Rating

Roman Theatre of Verulamium - 0.3 miles (Roman Site) Heritage Rating

St. Albans Cathedral - 0.6 miles (Cathedral) Heritage Rating

St Albans Clock Tower - 0.7 miles (Historic Building) Heritage Rating

Gorhambury House - 1.5 miles (Historic House) Heritage Rating

Old Gorhambury House - 1.7 miles (Historic Building) Heritage Rating

Luton Hoo Walled Garden - 6.3 miles (Garden) Heritage Rating



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St Albans
Tourist and Information Centre
Alban Arena
Civic Centre
St Albans
Hertfordshire
England
AL1 3LD
Tel: 01727 864 511
Email: tic@stalbans.gov.uk
Web: http://www.enjoystalbans.com
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