Use the outline as a beginning
Some buildings are recognised from a few edges. The Sydney Opera House, designed by Jørn Utzon, is one of the clearest examples: its shell-like roof forms remain legible from many positions around the harbour. A distant silhouette can establish that identity, but it tells you less about the tiled surfaces, podium or experience of approaching an entrance.
Make an outline photograph if it serves your purpose, then ask what it leaves unexplained. Look for a second position where one roof form separates from another, or where a familiar object establishes scale. Avoid assuming that the most recognisable angle is also the most informative. Recognition and understanding are related, but they are not the same task.
Follow the surface instead of collecting curves
Frank Gehry's Guggenheim Museum Bilbao offers a useful study in changing surface orientation. Its titanium-clad forms catch light differently as their planes and curves turn. Rather than trying to include every volume, choose one transition between a bright face and a darker one. Watch whether that boundary explains a curve or merely creates a confusing patch of contrast.
At the Heydar Aliyev Center in Baku, designed by Zaha Hadid Architects, continuous-looking surfaces encourage another kind of observation: where does the ground appear to become wall or roof? A photograph can describe that continuity, but it should not make technical claims about construction based only on appearance. Visible form and structural behaviour are not always the same thing.
Ask what is carrying and what is enclosing
A dramatic diagonal might be a load-bearing element, an external support, a screen or a decorative feature. If you do not know, describe what is visible rather than inventing an engineering explanation. The Centre Pompidou in Paris makes external systems conspicuous, while other buildings conceal much of their structure behind an expressive envelope. Both reward a closer look at joints and transitions.
OMA's CCTV Headquarters in Beijing is a striking example of connected volumes that resist the familiar image of a single upright tower. From some positions the loop-like relationship is clearer than from others. A useful photograph separates the volumes enough for the connection to be understood, while a contextual frame shows how the building sits among more conventional neighbours.
Find order inside the apparent exception
Unusual buildings often contain strong repetition. Habitat 67 in Montreal, by Moshe Safdie, uses repeated dwelling modules to produce a complex overall composition. The Interlace in Singapore, designed by OMA with Ole Scheeren leading the project, arranges stacked residential blocks into a very different spatial pattern. These places are not interchangeable visual puzzles; they are environments where people live.
Look for the repeated unit before making a tight crop. Then include enough variation to explain how the system changes. Respect residents' privacy and the boundaries of private property. A view from an authorised public area may show the architecture without turning balconies and windows into a catalogue of individual lives.
Keep a little of the ordinary world
A remarkable building can become strangely placeless when every pavement, tree and neighbouring structure is removed. The Kunsthaus Graz, designed by Peter Cook and Colin Fournier, is especially interesting in relation to its urban surroundings. A contextual photograph can explain the contrast between an unfamiliar envelope and the grain of an existing city more clearly than a surface detail alone.
Try including one calm reference: an older roofline, a street edge, a row of trees or a person-sized entrance. The reference should not compete equally with the main form. Its purpose is to help the viewer read difference. This approach also works close to home, where a new extension or unusual staircase may provide enough contrast for an absorbing study.
Build a sequence, not a trophy collection
Give yourself three frames: identity, relationship and detail. The first establishes the building; the second explains how two parts meet or how the building meets its setting; the third shows a material, joint or threshold. A set like this can be more revealing than several versions of the same dramatic wide view.
Before travelling, consult official visitor information for access, current restrictions and photography conditions. Public visibility does not guarantee entry, tripod use or permission for every publication context. Architecture is experienced by occupants and neighbours as well as visitors. A patient, respectful observation is more valuable than a spectacular image obtained by ignoring that shared reality.
Finally, resist ranking buildings by how strange they appear. Extraordinary photography can come from an ordinary wall seen precisely. Use celebrated projects as prompts for observation, then test the same questions on your next familiar walk.