FWIW, in the US, all photos taken from public property are legal. Also, a photo of a building can't violate the building's copyright. Building another building that looks like it can, but taking a photo of it can't.
His web site also has a PDF you can print out and keep with you in your bag for the inevitable interaction with LEOs.
My general recollection is in the US if you can see it, you can legally take a photo of it. The major exceptions are nuclear weapons bases where they will shoot first and ask questions later, highly restricted sites like Groom Lake, and taking photos of people in their own home-you enter into peeping laws there because even if the shades are open, they have a reasonable expectation of privacy in their domicile.
This is a tremendous oversimplification. For just one example, you can't use a telephoto lens to survey private property.
Is there not even restrictions on military bases?
17 U.S. Code § 120(a): "The copyright in an architectural work that has been constructed does not include the right to prevent the making, distributing, or public display of pictures, paintings, photographs, or other pictorial representations of the work, if the building in which the work is embodied is located in or ordinarily visible from a public place."
https://www.law.cornell.edu/uscode/text/17/120
There is, however, an exception for secret military installations in 18 U.S. Code § 795: "[...] certain vital military and naval installations or equipment as requiring protection against the general dissemination of information relative thereto, it shall be unlawful to make any photograph [...]"
Many countries have such an exception, and it often also applies to sculptures permanently located in a public place.