Mithraeum Bloomberg SPACE brings two millenia-old Roman Temple of Mithras back to life in a new cultural experience for London. This unique reconstruction beneath Bloomberg’s new European headquarters marks a new direction for the interpretation of archaeological remains as it allows visitors to step back in time through technological advances.

The Roman Temple of Mithras, dating from the third century, nearly 1,800 years ago, has been revealed in a unique reconstruction on the site of its original discovery in the heart of the City of London. London Mithraeum Bloomberg SPACE is a free new cultural destination created as part of the development of Bloomberg’s new European headquarters that opened to the public on Tuesday, 14 November 2017.

With its own, independent entrance along Walbrook, the three-storey space showcases the reconstructed temple seven metres below the streets of modern London, at what was once Roman ground level. The temple is introduced on a mezzanine, directly above it, by a display of projections and interactive kiosks that invite visitors to explore the practices and symbols associated with the cult of Mithras. At street-level, Bloomberg SPACE will host a series of contemporary art commissions reflecting broadly on the history of the site, as well as a huge vitrine displaying more than 600 remarkable Roman artefacts found during recent excavations at Bloomberg.

Temple of Mithras
Six hundred of the 14,000 Roman artefacts uncovered on the Bloomberg site are displayed on the ground level of London Mithraeum Bloomberg SPACE. [Photo credit: James Newton]

The immersive temple reconstruction uses carefully directed lights, haze and sound to bring the temple’s remains to life, and to evoke the rituals and activities that took place within its cave-like walls. The memorable reconstruction marks a new direction for the interpretation and presentation of archaeological ruins.

“London has a long history as a crossroads for culture and business, and we are building on that tradition”, says Michael R. Bloomberg, Founder, Bloomberg LP. “As stewards of this ancient site and its artefacts, we have a responsibility to preserve and share its history. And as a company that is centred on communication – of data and information, news and analysis – we are thrilled to be part of a project that has provided so much new information about Roman London. We hope London Mithraeum Bloomberg SPACE will be enjoyed by generations to come.”

Bloomberg’s new European headquarters lies over the course of one of London’s lost rivers, the Walbrook. Nearly 2,000 years ago when Londinium was founded by the first Roman Londoners, this river marked the limits of their early settlement.

As the town prospered and expanded, the banks of the Walbrook were reclaimed and Roman London became not only a major port of trade but a bustling economic centre in its own right. At its height, it had a population of around 30,000 people contained within the boundary of its city walls. Parts of these walls survive in an area roughly corresponding to the ‘Square Mile’ of the City of London, which remains London’s centre of commerce today.

Temple of Mithras
London Mithraeum uses light sculpture, haze and sound to bring the temple’s remains to life. [Photo credit: James Newton]
Temple of Mithras
The temple of Mithras reconstruction. [© PAYE Conservation]

In the 3rd century AD, nearly 200 years after the founding of Londinium, a Roman Londoner built a temple to the god Mithras next to the Walbrook. The Temple of Mithras, perhaps the most famous Roman discovery in 20th century London, was found by chance in 1954 on a bomb site where the Bloomberg building now stands. The near complete footprint of the temple emerged from the rubble, a symbol of London’s endurance. It immediately became a public sensation, attracting front-page news and queues of up to 30,000 visitors a day over a two week period.

Debate raged in government and the press about what should happen to the ruin. Eventually, it was dismantled and moved to make way for essential rebuilding. In the 1960s, it was roughly and somewhat inaccurately reconstructed 100 metres away from its original location. Bloomberg acquired the site in 2010 and committed to reinstating a more faithful, publicly accessible reconstruction of the temple.

A team of skilled archaeologists, stone masons, conservators and designers have created the reconstruction working from original archaeological drawings, models, photographs, first-hand testimonies and newsreel footage. The project has taken ten years to complete and has been funded and created by Bloomberg, working closely with the City of London and a team of conservation specialists, in consultation with the expert team at MOLA (Museum of London Archaeology). The immersive display within the temple was created by an interdisciplinary team led by internationally-recognised design firm Local Projects.

“London is a Roman city yet there are few traces of its distant past that people can experience first-hand”, explains Sophie Jackson from MOLA, Lead Archaeological Consultant for London Mithraeum. “London Mithraeum is not only a truthful presentation of the archaeological remains of the temple of Mithras; it is a powerful evocation of this enigmatic temple and a fantastic new heritage attraction for the capital.”

Temple of Mithras
An interpretation space on the mezzanine level of London Mithraeum Bloomberg SPACE explores the rituals and beliefs of the cult of Mithras. [Photo credit: James Newton]

More than 600 items of the 14,000 uncovered during the Bloomberg dig, carried out in advance of construction for Bloomberg, were carefully selected for display in London Mithraeum Bloomberg SPACE. These precious items include the first financial document from Britain, etched on a wooden tablet, a tiny amber amulet in the shape of a gladiator’s helmet and a hoard of pewter vessels that may have been used in rituals within the temple. A digital interactive resource that delves deeper into the wealth of the archaeological discoveries from the Bloomberg dig is accessible via mobile devices.

Responding to the site’s history, Bloomberg SPACE features a rotating programme of commissioned works by contemporary artists. The first of these is Another View from Nowhen, an installation by Dublin-based artist Isabel Nolan. The commission includes two new site-specific works: The Barely Perceptible Vibration of Everything, a large, hand-tufted tapestry, and Blind to the Rays of the Returning Sun, an open-form steel sculpture.

A digital book titled Archaeology at Bloomberg reveals the findings from MOLA’s recent excavations of the site and the fascinating story of the Temple of Mithras. It is free to download at

London Mithraeum Bloomberg SPACE is designed to be an educational and inspirational destination for London’s residents and international visitors. It is accessible free of charge, Tuesday to Sunday. Advance booking is required via

Opening Times for the Temple of Mithras:

Tuesday–Saturday, 10–6pm; Sundays/bank holidays,12–5pm; First Thursdays, 10–8pm; Pre-booked private groups by request.)