<a href="index.php?page=&url=http%3A%2F%2Fwww.hogartharchitects.co.uk%2F" target="_blank" target="_blank">Hogarth Architects</a>-designed Hidden House's huge finished basement, light-up dance floor and waterfall were featured on the British homes show "Grand Designs."
Hidden House (Kensington, London) —
Hogarth Architects-designed Hidden House's huge finished basement, light-up dance floor and waterfall were featured on the British homes show "Grand Designs."
Courtesy Hogarth Architects
The windows at Villa Caroisla (<a href="index.php?page=&url=http%3A%2F%2Fwww.nickbakerarchitects.co.uk%2F" target="_blank" target="_blank">Nick Baker Architects</a>) are meant to frame the view outside as though it were a living piece of art.
Villa Caroisla (Ealing, London) —
The windows at Villa Caroisla (Nick Baker Architects) are meant to frame the view outside as though it were a living piece of art.
Hamish Par
A former carpet factory, Second Home is now a workspace and incubator for creative nomads, and a venue for private events.
Second Home (Shoreditch, London) —
A former carpet factory, Second Home is now a workspace and incubator for creative nomads, and a venue for private events.
Iwan Baan
Once a 1930s milk depot, Quay House was converted into an architect's studio and home in 2001.
Quay House (Southwark, London) —
Once a 1930s milk depot, Quay House was converted into an architect's studio and home in 2001.
Anthony Coleman/Open House London
Designed by Brutalist architect Basil Spence, the library was refurbished in 2016.
Salters' Hall (City of London) —
Designed by Brutalist architect Basil Spence, the library was refurbished in 2016.
Courtesy Open House London
The residence of the British Prime Minister since 1735, some of the most important decisions in domestic and world politics have been made behind its imposing black door. It's safe to say there isn't a nook or cranny which hasn't witnessed some moment of history. Tours are by public ballot and photo ID is required.
10 Downing Street (Westminster, London) —
The residence of the British Prime Minister since 1735, some of the most important decisions in domestic and world politics have been made behind its imposing black door. It's safe to say there isn't a nook or cranny which hasn't witnessed some moment of history. Tours are by public ballot and photo ID is required.
Courtesy Open House London
The Grade I listed Victorian building was previously home to the Foreign Office, the India Office, the Colonial Office and the Home Office. These days the Italianate style complex is the Foreign and Commonwealth Office, with its majestic Durbar Court proving a perennial highlight for visitors.
Foreign and Commonwealth Office (Westminster, London) —
The Grade I listed Victorian building was previously home to the Foreign Office, the India Office, the Colonial Office and the Home Office. These days the Italianate style complex is the Foreign and Commonwealth Office, with its majestic Durbar Court proving a perennial highlight for visitors.
AFP/AFP/AFP/Getty Images
Designed by Ernö Goldfinger, the godfather of British modernist architecture, Trellick Tower drew from <a href="index.php?page=&url=https%3A%2F%2Fwww.cnn.com%2F2016%2F08%2F08%2Farchitecture%2Fle-corbusier-unesco%2Findex.html" target="_blank">Le Corbusier's</a> <em>Unite d'Habitation. </em>With <a href="index.php?page=&url=https%3A%2F%2Fwww.cnn.com%2F2016%2F05%2F23%2Farchitecture%2Fbrutalism-this-brutal-world-modern-forms%2Findex.html" target="_blank">Brutalism back on the map</a>, it will no doubt prove a popular retro entry on the list of attractions.
Trellick Tower (Kensington and Chelsea, London) —
Designed by Ernö Goldfinger, the godfather of British modernist architecture, Trellick Tower drew from Le Corbusier's Unite d'Habitation. With Brutalism back on the map, it will no doubt prove a popular retro entry on the list of attractions.
James O. Davies/English Heritage
Part of the London School of Economics and Political Science, the Saw Swee Hock Student Centre was nominated for the Stirling Prize in 2014.
Saw Swee Hock Student Centre (Westminster, London) —
Part of the London School of Economics and Political Science, the Saw Swee Hock Student Centre was nominated for the Stirling Prize in 2014.
Dennis Gilbert/VIEW/Dennis Gilbert/VIEW
Renzo Piano's Shard towers over London's skyline as the tallest building in Western Europe. The 306-meter (1004-foot) skyscraper will open up its viewing platform on Level 72 -- 244 m (801 ft) above ground -- for 50 people a day, chosen via a public ballot.
The Shard (Southwark, London) —
Renzo Piano's Shard towers over London's skyline as the tallest building in Western Europe. The 306-meter (1004-foot) skyscraper will open up its viewing platform on Level 72 -- 244 m (801 ft) above ground -- for 50 people a day, chosen via a public ballot.
Courtesy of The View from The Shard
Affectionately known as "The Gherkin," 30 St Mary Axe is among the major London skyscrapers opening its doors. Visitors have a chance to tour the foyer and top floor of the 40-story curvilinear landmark.
30 St Mary Axe (City of London) —
Affectionately known as "The Gherkin," 30 St Mary Axe is among the major London skyscrapers opening its doors. Visitors have a chance to tour the foyer and top floor of the 40-story curvilinear landmark.
Gherkin Oli Scarff/Getty Image
If you're going to create one of London's most iconic buildings, you want to make it good enough to call home. Rogers Stirk Harbour + Partners set up shop on the 14th floor, and will be offering tours of their open-plan offices with views over the City and Canary Wharf.
Rogers Stirk Harbour + Partners studio (City of London) —
If you're going to create one of London's most iconic buildings, you want to make it good enough to call home. Rogers Stirk Harbour + Partners set up shop on the 14th floor, and will be offering tours of their open-plan offices with views over the City and Canary Wharf.
Oli Scarff/Getty Images Europe/Getty Images
For the first time all 114.5 meters (1232 feet) of Anish Kapoor's red steel sculpture will be part of Open House London, complete with its <a href="index.php?page=&url=http%3A%2F%2Fedition.cnn.com%2F2016%2F04%2F28%2Fdesign%2Fworlds-tallest-longest-tunnel-slide%2F">newly opened and fully operational slide</a>. Fun fact: The sculpture used enough steel to make 265 double-decker buses.
Arcelormittal Orbit (Newham, London) —
For the first time all 114.5 meters (1232 feet) of Anish Kapoor's red steel sculpture will be part of Open House London, complete with its newly opened and fully operational slide. Fun fact: The sculpture used enough steel to make 265 double-decker buses.
Paul Gilham/Getty Images Europe/Getty Images
The new cancer center at Guy's Hospital cost £160 million ($212 million) to build, and makes the hospital the first in Europe to have above-ground radiation facilities.
Guy's Cancer Centre (Southwark, London) —
The new cancer center at Guy's Hospital cost £160 million ($212 million) to build, and makes the hospital the first in Europe to have above-ground radiation facilities.
Courtesy Open House London
The industrial-style building is part of the Royal College of Art's expanding South London campus, which unites the college's fine art and applied arts programs.
Royal College of Art Battersea (Battersea, London) —
The industrial-style building is part of the Royal College of Art's expanding South London campus, which unites the college's fine art and applied arts programs.
Courtesy Open House London
The Victorian subway once connected High Level Station to the Crystal Palace. The palace burned down in 1936 and station was demolished in 1961, but the subway, resembling a vaulted crypt, remains.
Crystal Palace subway (Southwark, London) —
The Victorian subway once connected High Level Station to the Crystal Palace. The palace burned down in 1936 and station was demolished in 1961, but the subway, resembling a vaulted crypt, remains.
Courtesy Open House London
The $20-billion megaproject winding its way under central London is in its final stages, and stations at Bond Street, Canary Wharf, Custom House, Farringdon, Liverpool Street, Tottenham Court Road and Whitechapel will all get an advanced public preview.
Crossrail (mutliple venues) —
The $20-billion megaproject winding its way under central London is in its final stages, and stations at Bond Street, Canary Wharf, Custom House, Farringdon, Liverpool Street, Tottenham Court Road and Whitechapel will all get an advanced public preview.
Dan Kitwood/Getty Images Europe/Getty Images
Tin House, framing a private courtyard, is made up of interconnecting pavilions.
Tin House (Shepherd's Bush, London) —
Tin House, framing a private courtyard, is made up of interconnecting pavilions.
Courtesy Open House London
A 1960s mid-terrace near Finsbury Park has been revitalized by Archmongers with brick and timber extensions, glazed façade tiles and full-length windows.
Clock House (Islington, London) —
A 1960s mid-terrace near Finsbury Park has been revitalized by Archmongers with brick and timber extensions, glazed façade tiles and full-length windows.
Courtesy Open House London
Completed in 1972, the concrete council estate contains the aerial walkways popular at the time.
Robin Hood Garden Estate (Poplar, London) —
Completed in 1972, the concrete council estate contains the aerial walkways popular at the time.
Courtesy Open House London