Gateway to the West
Noun
Meaning
the largest city in Missouri; a busy river port on the Mississippi River near its confluence with the Missouri River; was an important staging area for wagon trains westward in the 19th century
Source: WordNetSynonyms
Examples
Some have questioned whether St. Louis really was—as Saarinen said —the "Gateway to the West".
The city was founded along the Missouri River, and a crossing called Lone Tree Ferry earned the city its nickname, the "Gateway to the West".