The year 1875 in architecture involved some significant events.

Buildings and structures

Buildings

• January 5 – Palais Garnier, home of the Paris Opera in France, designed by Charles Garnier, opens.
• June 13 – Sage Chapel at Cornell University, designed by Charles Babcock, holds opening services.^[1][2]
• Sydney Town Hall in Sydney, Australia is completed.
• William Watts Sherman House, Newport, Rhode Island, designed by Henry Hobson Richardson, is built.
• The Hermannsdenkmal monument in Berlin, Germany, designed by sculptor Ernst von Bandel, is completed.
• Cize–Bolozon viaduct opens to rail traffic across the Ain in France.

Awards

• RIBA Royal Gold Medal – Edmund Sharpe.
• Grand Prix de Rome, architecture: Edmond Paulin.

Organisations

• German firm Wayss & Freitag formed, who pioneered reinforced concrete.

Births

• May 12 – Charles Holden, English architect noted for London Underground stations (died 1960)
• July – W. Curtis Green, English commercial architect (died 1960)
• August 11 – Percy Erskine Nobbs, Scottish-born Canadian Arts and Crafts architect (died 1964)

Deaths

• February 28 – Robert Willis, English mechanical engineer, phonetician and architectural historian (born 1800)
• June 5 – E. W. Pugin, English ecclesiastical architect (born 1834)
• June 24 – Henri Labrouste, French architect (born 1801)