The principal Roman Catholic church of interest would probably be the Cathedral of the Immaculate Conception. Construction took place from 1901-1911 with notable contributions from the Polish community in Moscow. It was confiscated by the government in 1938, returned to the Church in 1996 and re-consecrated in 1999. It is the seat of the Archbishop of Moscow and one of three Roman Catholic churches in the city.
It is built in the Gothic style and has one of the largest pipe organs in Russia. As a result it is home to many concerts in addition to the Holy Mass. The acoustics and this remarkable organ make concerts here an experience to remember.
This imposing Cathedral has vigil Masses on Saturdays in both Russian and Latin. And, according to their website, the Sunday Mass schedule in various languages (including English) as follows (be sure to check ahead of time):
8:30 a.m. Mass in Polish
10:00 a.m. Mass in Russian.
10:00 Mass in Korean (chapel in the crypt)
11:45 a.m. Mass for children in Russian. Homily for children.
12:15 p.m. Mass in English and French (in the crypt of the chapel)
1:00 p.m. Mass in Polish
2:30 p.m. Mass in Spanish
3:00 p.m. Mass in English (in the crypt of the chapel)
3:30p.m. Divine Liturgy of the Armenian rite
5:00 p.m. Mass on extraordinary form (Latin Mass) of the Roman Rite (chapel in the crypt)
5:30 Mass in Russian
Address is: ul. Malaja Gruzinskaja 27, Moskva, 123557
Tel: +7 095 252 3911
Click here for the official website of the Cathedral of the Immaculate Conception in Moscow.
There are several other Catholic Churches in Moscow. We try to keep schedules current, but be sure to check with them for any changes in Mass times.