You can visit an Egyptian temple if you are in Cairo, of course... but in Madrid? The Temple of Debod (4th century BC) is a gift that Egypt gave to Spain. It can be visited and one of the best sights of Madrid can be seen from this place.
Puedes visitar un templo egipcio cuando estás en El Cairo, claro.. ¿pero en Madrid? El Templo de Debod (siglo IV AC) es un presente que Egipto le hizo a España. Puede ser visitado y una de las mejores vistas de Madrid se pueden ver desde este lugar.
I would not list the Real Academia de Bellas Artes des San Fernando has a must see in your tour of Madrid but it is worth a quick visit.
The museum is for the most part devoted to the works by Spanish artist. Goya, Riberia and Zurbaran. There are two rooms in which foriegn artists like Rubens are represented. Overall the works are sort of hit or miss. There really are not that many strong pieces here but as I said there are enough to make a visit worth while. If you are in Madrid for just a short stay then it probably could be missed without a serious loss.
The musuem is c/Alcala 13 northeast of the Puerta del Sol. The museum was just a short walk from my hotel which was one of the reasons why I dropped in on it.
Believe it or not this was the first museum I visited in Madrid. This fine museum is dedicated to Spain's military heritage throught out the ages. It has a very good collection armor, weaponry and maps. Some people may find its political leaning to the right somewhat offensive. There are some exhibits that are quite proud of Spain's Fascist past.
Not many tourists visit this little but interesting museum with a special "horror" section. Located in the "Colon" Square, along the Castellana Avenue.
Paseo de Recoletos, 41. Metro Colón
Regular entrance 9 euros (children, 5 euros).
In the Castellana avenue, under the bridge of the street Juan Bravo you can find this little collection of sculpture, mostly from spanish 60's artists (Chillida...). A good option to visit on sunday afternoons, when all other museums are closed.
Metro Ruben Dario
This is a rather unknown museum. It's not in my Top10 list, but is nice if you are interested in natural history. It's got a lot of dissected animals, as well as temporary exhibitions.
c/ Jose Gutierrez Abascal, 2. Metro: Gregorio Marañón.
Entrance 3 euros.