St. Louis was originally founded by traders, but once these frontiersmen started brining in their families, the city flourished until, between roughly 1880 and 1920, it was the fourth largest city in the U.S. following New York , Chicago and Philadelphia .   Many of the newcomers were German Catholics and Lutherans, so not surprisingly, some beautiful churchers were erected as the city grew. Below is listing of 10 significant and/or beautiful churches in the city.   This list was largely culled from the work of Built St. Louis, where you can find out much much more about area churches and other St. Louis architecture:   http://www.builtstlouis.net/churches/...    

1.         The Old Cathedral – 209 Walnut Street – Pretty much at the foot of the Arch, there’s been a church at this location since the 1830’s   http://www.psichurch.com/churches/140...  

2.         The Cathedral Basilica (aka the New Cathedral) – 4431 Lindell Blvd.   Also one of the top tourist attractions in the city, primarily due to it’s architecture and mosaics.   www.cathedralstl.org  

3.         St. Alphonsis Liguori – 1118 North Grand – Also known at “The Rock” www.stalphonsusrock.org  

4.         Trinity Lutheran Church – 812 Soulard St. – The first Lutheran church in St. Louis .   www.trinitystlouis .com

5.         St. Stanislaus Kostka – 1413 N. 20 th St. – Learn about their long struggle with Rome    www.stanislauskostka.com

6.         Shrine of St. Joseph – 1220 N. 11 th St .    www.shrineofstjoseph.org   

7.         St. Vincent De Paul – 1408 S. 10 th St .   www.stvstl.org

8.         St. Cecelia - 5418 Louisiana St. www.stceciliaparishstl.org

9.         2 nd Baptist and Holy Corners Historic District   http://en.wikipedia.org/wiki/Holy_Cor...

10.      Church of St. Michael and St. George - 6345 Wydown Blvd. - www.csmsg.org/main/location.html