At nearly 600 feet (180 meters) tall, this structure was narrowly granted permission to be the first skyscraper to grace the Parisian skyline in nearly half a century. Designed by Herzog & De Meuron, the Tour Triangle will be the third tallest building in the city, shorter only than one other skyscraper and the Eiffel Tower. Its shape is in part a reaction against the rectangle towers of downtown, which indeed sparked the initial moratorium on creating such tall buildings.

The triangular tower (already nicknamed simply ‘Triangle’) is slightly pyramidal in shape, tapering toward the top on all sides but most dramatically along two of its facades. An affair of steel and glass, it is starkly modern with respect to its neighboring buildings. Perhaps like the Eiffel Tower, originally widely hated, or the Centre Pompidou, a structurally-inverted museum also met with much initial criticism, the Triangle could become an icon within the city over time.

Despite being located at 1 Place de la Porte de Versailles, right on the edge of the central ring road surrounding the innermost part of the city (and arguably reinforcing a key nexus point), critics are concerned about the building overshadowing the surrounding urban landscape. The measure to approve its construction barely passed, after initially failing to garner sufficient votes last year.

Advocates are quick to point out that the building will create thousands of jobs both as it is constructed and once it is completed, as well as creating much-needed residential and office space in the city. For decades, the city limited new structures to around 100 feet, curbing development inside the city limits and forcing developers into suburban spaces. The popularity of this new tower may well be the determining factor in future downtown developments, either heralding the rise of additional towers or perhaps causing further decades of deferred construction depending on public reactions.

Mayor Bill de Blasio and the Department of Housing Preservation and Development has come under attack by critics for approving  building plans in NYC that include separate entrances for affordable-housing tenants and luxury-condo owners. The debate raises other questions about the urban poor and the mixing of classes in the city, and there are reasonable arguments on both sides of the issue.

40 Riverside Boulevard, an Upper West Side project of the Extell Development Company, is the property at the heart of this particular controversy. Its 55 street-facing units for low-income residents have helped permit its developers to create many of the other 219 additional units to be sold at market rates and take advantage of associated tax breaks. The aggregate effect of the benefits? An estimated $100 million in added floor space value for this 33-story tower.

The now-approved plans call for a back-alley entryway for second-class residents and a more prominent front entrance for its full-priced buyers. Detractors say the separation of entryways defeats the intention of the program, effectively segregating low-income from regular housing. Arguments on the flip side suggest that the city should focus its efforts developing less-valuable land elsewhere for subsidized housing projects, and allow builders to go higher without having to add affordable housing (in order to meet existing high-end demand).

The Inclusionary Housing Program to which Extell applied is meant to encourage integrated complexes and, in exchange, allow developers to build larger structures on coveted urban sites. At issue is the notion that this development may follow the letter but not the spirit of the system, which, in theory, should be arbitrated by the HPD, but in practice has become part of a larger public discourse.

The heated and ongoing debate has caused Manhattan Borough President Gale Brewer to promise a rejection of any future plans that similarly separate out entrances. Whether that will truly help solve the island’s long-term affordable-neighborhoods issue, though, remains to be seen.