Question: 15 Union Square West overlooks the intersection where what two roads came together in the early 19th century?

Context articles: Hyde Park Gardens
15 Union Square West
Bow Street Historic District
University Place (Manhattan)
Union Square, Manhattan
Rawlins Cross, St. John's
Dock Square (Boston)
Leitersburg Historic District
Wellingsbüttel Manor
Highways in Australia

Hyde Park Gardens, also known as Hyde Park Terrace consists of two roads running adjacent to the north western corner of Hyde Park, London.
 Number 1 Hyde Park Gardens runs up to Number 23 with a large private communal garden and then the road separates to allow access to The Ring and into Hyde Park and the neighbouring Kensington Gardens.
 This section contains the High Commission of Sri Lanka.
 Numbers 24 to 31 continue on a private gated road also with their own communal gardens buffering them from the busy Bayswater Road.
 They are amongst the most exclusive properties on the northern side of Hyde Park and date from the early 19th century.
 Grand white stucco fronted houses now converted into equally grand flats.
 Many celebrities such as Keira Knightley and overseas royalty, such as Queen Noor of Jordan, keep flats on this exclusive road.
 Access is strictly controlled via 24-hour porterage.
15 Union Square West, on East 15th Street overlooking Union Square in Manhattan, New York City, was Tiffany & Company’s 19th century headquarters.
 It was refurbished and opened in 2008 as high-end apartments.
The Bow Street Historic District encompasses a mixed 19th-century commercial-residential in the Union Square area of Somerville, Massachusetts.
 It covers a part of the west side of Union Square that saw significant development during the city's growth in the 19th century, and has remained well-preserved since then.
 The district was added to the National Register of Historic Places in 1976.
University Place is a short north–south thoroughfare in Manhattan, New York City, which runs from Washington Square Park in the south as a continuation of Washington Square East, taking the position of Madison Avenue uptown, and terminates at East 14th Street just southwest of Union Square.
 Although the roadway continues north of 14th Street as Union Square West, the two streets run in opposite directions (University Place uptown, and Union Square West downtown), both feeding into 14th Street.
 Until the late 1990s, University Place was a two-way street.
 The street contains numerous shops and restaurants, many of which cater to students at NYU and The New School.
Union Square is an important and historic intersection and surrounding neighborhood in Manhattan, New York City, located where Broadway and the former Bowery Road – now Fourth Avenue – came together in the early 19th century; its name denotes that "here was the union of the two principal thoroughfares of the island" rather than celebrating either the Federal union of the United States or labor unions .
 The current Union Square Park is bounded by 14th Street on the south, Union Square West on the west side, 17th Street on the north, and on the east Union Square East, which links together Broadway and Park Avenue South to Fourth Avenue and the continuation of Broadway.
 The park is under the aegis of the New York City Department of Parks and Recreation.
Rawlins Cross, formed by the intersection of Prescott Street, Monkstown and Military Roads, is a well known St. John's, Newfoundland and Labrador landmark.
 Military Road, built in 1773, was one of the first roads in this area that joined Fort William with Fort Townsend.
 Monkstown Road was built in the early 19th century and Prescott Street around 1840.
 The area where all three came together became to be known as Rawlins Cross, after grocer Patrick Rawlins.
Dock Square in downtown Boston, Massachusetts is a public square adjacent to Faneuil Hall, bounded by Congress Street, North Street, and the steps of the 60 State Street office tower.
 Its name derives from its original (17th-century) location at the waterfront.
 From the 1630s through the early 19th century, it served boats in the Boston Harbor as "the common landing place, at Bendell's Cove," later called Town Dock.
 "Around the dock was transacted the chief mercantile business of the town."
 After the waterfront was filled in in the early 19th century, Dock Square continued as a center of commerce for some years.
 The addition in the 1960s of Government Center changed the scale and character of the square from a hub of city life, to a place one merely passes through.
 As of the 1950s the square has become largely a tourist spot, with the Freedom Trail running through it.
Leitersburg Historic District is a national historic district at Leitersburg, Washington County, Maryland, United States.
 The district is centered on this early-19th century village.
 The village square retains three original early 19th century brick buildings, a tavern, general store, and dwelling; as well as a late-19th century wooden frame grocery store / meeting hall.
 Most of the original 30 log buildings, somewhat altered, remain.
 The village contains a cohesive collection of architectural resources reflecting a wide variety of vernacular types and popular expressions dating from the early 19th century through the early 20th century.
Wellingsbüttel Manor (German: Rittergut Wellingsbüttel, since Danish times: Kanzleigut Wellingsbüttel) is a former manor with a baroque manor house (German: "Herrenhaus") in Hamburg, Germany, which once enjoyed imperial immediacy ("Reichsfreiheit").
 Wellingsbüttel was documented for the first time on 10 October 1296.
 Since 1937 it has formed part of the suburbs of Hamburg as the heart of the quarter of the same name, Wellingsbüttel, in the borough of Wandsbek.
 The owners of Wellingsbüttel Manor from the beginning of the 15th until the early 19th century were consecutively the Archbishops of Bremen, Heinrich Rantzau, Dietrich von Reinking, the Barons von Kurtzrock, Frederick VI of Denmark, Hercules Roß, the Jauch family, Cäcilie Behrens and Otto Jonathan Hübbe.
 In the early 19th century it was the residence and place of death of Friedrich Karl Ludwig, Duke of Schleswig-Holstein-Sonderburg-Beck, the penultimate duke, who was an ancestor inter alia of the present-day British royal family.
 Wellingsbüttel Manor was elevated to the status of a Danish "chancellery manor" ("Kanzleigut").
 It was then acquired by Grand Burgher of the Free and Hanseatic City of Hamburg Johann Christian Jauch junior (1802–1880), becoming a country estate of the Jauch family.
 The manor house is together with Jenisch House ("Jenisch-Haus") one of Hamburg's best conserved examples of the Hanseatic lifestyle in the 19th century and jointly with the manor gatehouse a listed historical monument.
 The estate is located on the banks of the Alster River in the middle of the Alster valley ("Alstertal") nature reserve.
Highways in Australia are generally high capacity roads managed by state and territory government agencies, though Australia's federal government contributes funding for important links between capital cities and major regional centres.
 Prior to European settlement, the earliest needs for trade and travel were met by narrow bush tracks, used by tribes of Indigenous Australians.
 The formal construction of roads began in 1788, after the founding of the colony of New South Wales, and a network of three major roads across the colony emerged by the 1820s.
 Similar road networks were established in the other colonies of Australia.
 Road construction programs in the early 19th century were generally underfunded, as they were dependent on government budgets, loans, and tolls; while there was a huge increase in road usage, due to the Australian gold rushes.
 Local government authorities, often known as Road Boards, were therefore established to be primarily responsible for funding and undertaking road construction and maintenance.
 The early 1900s saw both the increasingly widespread use of motorised transportation, and the creation of state road authorities in each state, between 1913 and 1926.
 These authorities managed each state's road network, with the main arterial roads controlled and maintained by the state, and other roads remaining the responsibility of local governments.
 The federal government became involved in road funding in the 1920s, distributing funding to the states.
 The depression of the 1930s slowed the funding and development of the major road network until the onset on World War II.
 Supply roads leading to the north of the country were considered vital, resulting in the construction of Barkly, Stuart, and Eyre Highways.