> If I take an extremely large panoramic photograph and then fail to censor out small copyrighted sections of it, am I violating copyright law?

It depends. Is it just under copyright, or is the featured location trademarked too? Is the photograph for commercial purposes? Is the featured location generally accepted as being part of a cityscape / landscape?

* Eiffel tower: https://wiki.gettyimages.com/897/

* Millennium-wheel: https://wiki.gettyimages.com/british-airways-london-eye-mill...

* Pro sports venues: https://wiki.gettyimages.com/pro-sport-stadiums-and-venues/

* Hollywood sign: https://wiki.gettyimages.com/hollywood-sign/ https://www.youtube.com/watch?v=KUdQ7gxU6Rg