The Metropolitan Cathedral of the Holy and Equal-to-the-Apostles Mary Magdalene is a Polish Orthodox cathedral, located at al. Solidarności 52 in Warsaw.
It opened in 1869, serving the needs of a growing community of Russians settling in the area of present-day Praga Północ. During the Second Republic, the cathedral became one of two free-standing Orthodox churches in Warsaw, which were not destroyed or adapted for other purposes.
It is the main Polish Orthodox Church. The cathedral is also the cathedral for the Diocese of Warsaw-Bielsk.
Wikipedia https://en.wikipedia.org/wiki/Cathedral_of_St._Mary_Magdalene,_Warsaw
Coordinates 52°15'17.304" N 21°1'59.713" E