Hidden behind two Listed Building facades opposite Smithfield Market, and spread across eight floors below and above ground, E.ON's Citigen energy centre produces electricity, heat and cooling to buildings across the Square Mile.

Join us to find out more about our incredible journey to create a new museum for London. Apply to join a special tour of the General Market (currently in construction), or come along to meet the architects and take part in free family-friendly drop-in activities.

Sir Horace Jones (1883) and T P Bennett and Son (1963) New Museum of London scheme: Stanton Williams Architects Asif Khan Julian Harrap Architects, 1883

St John's Gate in Clerkenwell dates from 1504 and was built for the Knights Hospitaller. 19th and early 20th century additions by Richard Norman Shaw and John Oldrid Scott. Grade I listed. Home to the Museum of the Order of St John.

Richard Norman Shaw, 1874

Opened by the Queen in 2002 as one of the first new livery halls in the Square Mile for nearly 40 years, this is a brick building with traditional lime mortar and handsome lead roof, standing around a peaceful courtyard.

Hopkins Architects, 2002

A unique modern courtyard house making brilliant use of a restricted site. A retractable glass roof gives wonderful natural light and opens the house to the sky in dry weather.

Paxton Locher Architects, 1995

Grade II listed, built as a Welsh Charity School in 1738. A library with a focus on Marxism and Socialism since 1933. Lenin worked here 1902-03 and his office is preserved. Fresco by Jack Hastings in 1st floor. Late 15C tunnels.

Sir James Steere, 1738

The oldest surviving church in the City of London founded in 1123. Originally part of an Augustinian Priory the church survived the Great Fire and the Blitz.

Unknown, 1123

Tranquil Clerkenwell, so close to the bustling City has a distinct character and intriguing history. Once centred around great religious houses, the area has been the scene of fierce rebellion, innovative architecture, and major commerce.

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Join us for a sustainability-focused open studio at Conran and Partners, award-winning architecture and interior design studio, showcasing the holistic way we integrate sustainable design practices into our work.

Founded as a Black Death burial ground, the site has served as a Carthusian monastery, Tudor mansion, school and an almshouse, which it remains to this day. The Charterhouse opened to the public in 2017 with a new museum.

Henry Yevele, 1371

Founders' Hall boasts a unique blend of neo-Vernacular, Arts and Crafts, and Post-Modern styles. Its exterior features distinctive gabled bays, terracotta panels, and metal grilles, while the interior showcases a ceremonial staircase, ornate parlour, and a livery hall illuminated by impressive œil de bœuf windows, creating an exceptional fusion of architectural elements.

Green Lloyd Architects, 1987