10 Buildings I haven never gotten out of my head.
1. All Saints, Margaret Street. Westminster, London. William Butterfield, 1859. Hearty on the outside and inside, a level of sophistication with color, pattern, shadow, form, harmony, and clashing that feels rare in western architecture. https://www.allsaintsmargaretstreet.org.uk/history/virtualtour
2. Florence Hollis Hand Chapel. Washington, DC. Hartman-Cox, 1970. Aalto-like chapel nestled in a valley. You enter from the top, and walk down a staircase full of nooks and surprise views. ADA disaster, but... https://hartmancox.com/mt-vernon-college-chapel
Sidenote: IIRC, this was part of a restructuring of women's junior college that into a 4-year in the 60s. Check out the cool megastructural master plan they did. Chapel is at top. Only a quarter was completed, all of which is demolished except the chapel.
3. Jantar Mantar. Jaipur, India. Before 1738. A field of building-sized astronomical instruments commissioned by the founder of Jaipur, Jai Singh II. Just in awe of the beauty and precision of the space.
4. You knew this was coming: Nicholas Hawksmoor's Six London Churches. 1712-1730. An alt-history reimagining of early Christian architecture by a lower-class guy who never left England.