You’re over complicating things: in one instance, some nice, old facades get preserved. In the other,you just get the hulking concrete with nothing else.
Not everyone has the mind of a post-modern starchitect. I’m sure a lot of regular people walk by that building in DC and appreciate the juxtaposition.
The Embassy of Mexico building is located in an area that lies outside of the design review purview of the Commission of Fine Arts, a Federal agency. A Federal review of new construction occurs if a project lies within, fronts, or abuts (directly, or proximately) the geographic land boundaries set out by the Shipstead Luce Act. Those boundaries, in the District of Columbia, roughly are:
- the grounds of the Capitol
- the grounds of the White House
- the portion of Pennsylvania Avenue extending from the Capitol to the White House
- Lafayette Park
- the Mall Park System
- Southwest Waterfront
- Rock Creek and Potomac Parkways
- Rock Creek Park
- the National Zoo
The Embassy of Mexico is on Pennsylvania Ave., but west of the White House and outside the areal jurisdiction of Shipstead Luce. The current members of the Commission of Fine Arts and their bios can be found here.
https://www.cfa.gov/about-cfa/who-we-are
While I certainly can't speak for the Commission, but having some familiarity with their reviews, I doubt that the Commission would have approved the as-built design for the Embassy of Mexico.
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This is a tangent about preserving facades of buildings deemed to be historic. The structure pictured below is located in the District of Columbia, a former Federal government industrial building, (1) built before 1950, and (2) located within a National Historic Landmark historic district. The combination of (1) and (2) made it 'historic', and deserving of protection. The style is Art Moderne. The architect was William Dewey Foster, the architect for the Harry S. Truman building (State Department building) in Washington. A brief bio here:
https://en.wikipedia.org/wiki/William_Dewey_Foster
Note the stain on the brick from severe rust-jacking..
West facade, and front entrance (and only entrance for employees).
South elevation, and yard area. The wall at image right is an elaborate flood-protection wall, much of the visible height is below grade. The red brick building at image left is the Four Seasons hotel, of similar architectural style and vintage to the one on Boylston St.
Approved design, west façade and front entrance.
Approved design, south elevation. A publicly accessible, one-acre park (community benefit) will be built atop two levels of private parking.
The design architect is Sir David Adjaye. The landscape architect is Laurie Olin. When completed, the building will be the Residences at the Four Seasons.
Very long story short. Preservationists sought to preserve the structure's facades, arguing that the structure is historic, and deserving protection and preservation under the law. The Old Georgetown Board, (OGB) a separate but sub-ordinate entity of the Commission of Fine Arts, voted to preserve the building. (The OGB is comprised of three architect members, with jurisdiction for design review of projects within the Georgetown National Historic Landmark historic district. The three architects are not members of the Commission of Fine Arts.)
The Commission of Fine Arts, led by its then Chairman, Alex Krieger, a professor at the Harvard Graduate School of Design, approved the proposed design, and, de facto, the demolition of most of the structure. (One of the OGB architects had objected to any demolition, but urged the owners to do something about the rust-jacking stains.) There was then a subsequent hearing before an administrative law judge (with jurisdiction for historic preservation in DC), and who ruled in favor of demolition Preservationists appealed the ruling of the administrative law judge to the DC Court of Appeals, which unanimously upheld the determination of the administrative law judge.
The approved design will preserve the west façade only, and demolish the remainder of the building. Two different structural engineering firms, acting independently, concluded that the brick forming the east, south, and north facades was severely damaged by rust-jacking. (The brick encased the steel framing; the steel framing had no lateral support; and three sides of the exterior were, in essence, a balloon enveloping a hollow volume, having a single floor for the industrial machinery.) One of the structural engineers opined that all the damaged and deteriorated brick could be replaced, and the façade appearance retained.
Aside from the rust-jacking, the structure is heavily contaminated with hazardous pollutants. Contamination that is likely much worse than the contamination found at the old power house at the Charlestown Navy Yard (which is being demolished), and at the boiler house for the South Boston Edison Power Plant (also being demolished) Subsequent to the assessments done by the two structural engineering consultants, extensive mercury contamination was discovered. With that discovery, there is no longer any alternative, adaptive future re-use of this building. If the structure was not being re-developed, then the Federal government would likely be financially responsible for demolishing all of it.
That any re-development is occurring at all is because the future owners of 70+ tres expensive condo residences are paying for it.