This is a thing that happens in localizations that are so photogenic, you have a lot of photographers within your frame. After waiting several minutes, I decided to use one of them as part of the composition, leaving the horizon line in a diagonal to have more dynamic sense of clouds motion in the sky.
Templo de Debod, Parque del Oeste, Madrid (Spain)
Canon EOS 450D | Sigma 10-20mm f4-5.6 DC EX HSM @ 10 mm | f11, 8s, ISO 100. HDR/DRI from 4 exposures @ [-4 EV .. -2 EV .. 0 .. +2 EV ]