The Triumphal Arch (Arcul de Triumf) in Bucharest was built in memory of Romanian WW1 troops, seen during a rainy day.
The main building of the Rompetrol Headquarters in Bucharest, Romania, during a cloudy day.

You might also be interested in:

Sleek office architecture on the Zalando Campus near East Side Gallery in Berlin during dusk.
exterior architectural, long exposure
Dynamic contrast of still architecture and moving crowds at Brandenburger Tor, captured in long exposure.
long exposure
Modern geometry meets morning light – Cube Berlin at sunrise in long exposure.
exterior architectural, long exposure