Junior Constitutional Club

The Embassy of Japan in London is the diplomatic mission of Japan in the United Kingdom. The embassy occupies a large Victorian building on Piccadilly opposite Green Park, which is Grade II listed. It was once the former Junior Constitutional Club, which was the first building in London to have its exterior entirely clad in marble.

The Isthmian Club, founded in 1882, later had premises at 105, Piccadilly, London, in a grand five-bay house that had belonged to Sir Julian Goldsmid, Bt. The non-political club was open to "Gentlemen who have been educated at one of the universities or public schools, and for officers of the army and navy," who were voted in by ballot of the steering committee. Its members were active in rowing, cricket and other sports.The Isthmian League, still existing as a prominent regional football league covering London and South East England featuring semi-professional and amateur clubs, was founded in 1905 by amateur clubs in the London area. The club's Account Book, 1889–97, is conserved by the Westminster City Council (Acc. no. 776).

The Public Schools Club is a former London gentlemen's club. The Public Schools Club was founded in October 1863 at 17 St James's Place, London. As outlined in the British journal The Athenaeum, from its foundation, the club restricted its membership to former pupils of Charterhouse School, Eton College, Harrow School, Rugby School, Shrewsbury School, Oundle School, Westminster School and Winchester College.By 1885, a "Public Schools Club" was advertising for "suitable premises" in London in which to re-establish their establishment.The club was re-founded in 1909, based at number 13 Albemarle Street which until very recently had been the home of the Albemarle Club. The Public Schools Club disbanded during World War I as a result of the heavy casualties sustained among its membership.By 1910, the alpine sports club which had been founded c.1905 as the Winter Sports Club by Sir Henry Lunn was incorporated as the Public Schools Alpine Sports Club and under the control of “Alpine Sports, Ltd.”. In 1910, the club advertised that it "devoted its attention to Norway as a field for winter sports". Many British gentlemen's sports clubs such as the Yorkshire Ramblers' Club were interested in the activities of Sir Henry Lunn and his son Sir Arnold Lunn.After the war the club was re-founded in 1920 in Curzon Street, Mayfair. A 1937 road-widening scheme (linked to the 1935 road alterations which necessitated demolishing half of Lansdowne House and creating the Lansdowne Club) forced the club out of its premises, and it moved to 100 Piccadilly, where it remained for the rest of its existence. Suffering from dwindling membership, the club closed in 1972, merging with the East India Club, and moving to the East India's premises in St James's Square. However, the merger has proved to be something of a takeover, as the East India naturally had no remaining members from the long-defunct East India Company, and the Public Schools Club has imported a steady stream of members. Indeed, the East India currently claims some 40% of its members come under the 'J7' rule imported from the Public Schools Club, whereby students leaving their public school at 18 pay a £360 (as of 2014) fee in exchange for membership until the age of 25.

The Badminton Club is a former London gentlemen's club. According to the 8th Duke of Beaufort in his book Driving (1889), the club was founded in 1875 at 100 Piccadilly by a sporting doctor called Hurman. According to the Duke, “this was a thorough coaching establishment, having all the year round a coach, a brake, a team or two... capital stabling and coach-houses, as well as chambers and bedrooms kept for the use of members”.The club was named after Badminton House, the country seat of the Dukes of Beaufort. The 10th Duke was Master of the Horse (1936–1978) to three British monarchs, King Edward VIII, King George VI, and Queen Elizabeth II. Since 1949, Badminton House has hosted the prestigious annual Badminton Horse Trials, a three-day competition event. In 1883, the club also acquired the adjacent premises at 98 and 99 Piccadilly and a new clubhouse was built on the site, designed by the architect Robert William Edis. The principal internal feature was the “Flower Court”, approached through the narrow entrance from Piccadilly. The club flourished so long as the horse remained supreme in London but, by the late 1930s, driving was only the pastime of a few. The club had lost its raison d’etre and decided to disband in 1938. At about that time the Public Schools Club was on the lookout for larger premises and they took over the clubhouse immediately. The clubhouse was finally closed in 1972, when the Public Schools Club merged with the East India Club in St James's Square, and was demolished a few years later. The last surviving parts of the clubhouse are the war memorial plaques for members of the Public Schools Club from World War I and World War II and the Badminton Club’s plaque for World War I, which are still preserved at the East India Club.

The St James's Club was a London gentlemen's club which operated between 1857 and 1978. It was founded by two leading diplomats and its members continued to be largely diplomats and authors. It was first established in Charles Street and moved to 106 Piccadilly by 1868. In the final quarter of the twentieth century many gentlemen’s clubs of London suffered from declining membership, and in 1978 the St James's Club merged with Brooks's Club and vacated its premises.

The Bachelors' Club was a London gentlemen's club in the late nineteenth and early twentieth century, now defunct. As the name suggests, membership was only open to bachelors. The club had a reputation for having a markedly younger membership than many other Edwardian clubs, and given the high-spirited antics which sometimes ensued on the premises, it was cited (along with Buck's and the Bath Club) as an influence on the fictional Drones Club, in some of P.G. Wodehouse's earlier stories. A persistent rumour circulated throughout its existence, and reached wider circulation in the 1920s, that some of its membership were gay - then both illegal and publicly frowned upon – and it soon became superseded by Buck's as the young man's club in London, being forced to close shortly thereafter. The club was first situated at 11 Hamilton Place, then at 8 South Audley Street, and finally it amalgamated with the St. James's Club in 1946 at 106 Piccadilly. Famous members included John Buchan, Field Marshal Sir Herbert Kitchener, and Capt. Berkeley Levett, a witness in the Royal Baccarat Scandal.

Eaton Square School is a co-educational and independent day school.

Cambridge House is a Grade I listed former townhouse in central London, England. It sits on the northern side of Piccadilly at number 94, in the fashionable district of Mayfair. As of 2021, the property is being converted into a luxury hotel and seven residences.The current name of the house comes from one of its former owners, Prince Adolphus, Duke of Cambridge (1774–1850), the seventh son of King George III, but it was originally known as Egremont House and then Cholmondeley House. From about 1865 to 1999, it was the home of the Naval and Military Club and was known colloquially as the In and Out Club, due to its prominently signposted one-way carriage drive.

The American Club was a London gentlemen's club, now dissolved. It was established to provide a centre for London's growing expatriate American community, with the inaugural meeting being held at the Savoy Hotel on 21 October 1918. Shortly afterwards, it moved to its permanent home at 95 Piccadilly, next door to the Naval and Military Club (“In and Out Club”) at 94 Piccadilly, which was convenient, as many of the members knew each other from service in the First World War. It was a gentlemen's club, with an associated female branch, the American Women's Club (AWC) - requests made by the AWC to amalgamate were declined. Anthony Lejeune noted in the 1970s that "the disappointing thing, to an English visitor, about the American Club is that it contains so little which is specifically American", citing its similarity to many other London clubs.The Club enjoyed the benefit of a long lease at a fixed rental dating back to the 1920s, due to wartime connections. When this expired in the 1980s the modern rent proposed effectively forced closure. As with many London clubs, membership had been in decline for some years. The premises then remained untenanted for many years.

The Sheraton Grand London Park Lane is a 5 Star hotel on Piccadilly, London. The hotel opened in 1927 as The Park Lane Hotel to designs by architects Adie, Button and Partners, in a grand Art Deco style, and was constructed by the developer Sir Bracewell Smith. The original architect had been C. W. Stephens, who designed Harrods, but work had stopped at the outbreak of the First World War, and Stephens died in 1917. The building is a fine example with a mansard roof and Portland stone facade. The building is Grade II listed and has 303 bedrooms on eight floors with the front overlooking Green Park towards Buckingham Palace. The hotel was bought by ITT Sheraton in April 1996 for $70 million. ITT Sheraton was acquired by Starwood in 1998. Starwood sold its leasehold on the hotel to Sir Richard Sutton's Settled Estates in 2014, but continues to operate the property, under a long-term management contract. Though the hotel was a Sheraton property from 1996 on, it did not actually begin using the Sheraton name for twenty years, until 19 July 2016, when it was renamed Sheraton Grand London Park Lane upon the completion of a major renovation.The hotel is featured in the films The End of the Affair, The Winds of War and The Golden Compass.

Imitate Modern is a London-based contemporary photography and art gallery that exhibits work by emerging artists.

Half Moon Street is a street in the City of Westminster, London. The street runs from Curzon Street in the north to Piccadilly in the south.