Temple of Debod, also known locally as Templo de Debod, brings an authentic Egyptian sanctuary from the 2nd century BC into central Madrid, set above the Manzanares cornice in Parque del Oeste. The mix of ancient stone, open sky, and city views gives this stop a rare atmosphere, especially close to sunset.
For a first visit, reserve a free timed entry in advance and pick an early-evening slot, so you can see the interior and still catch the viewpoint light afterward, then reserve now.