Portland Union Station
The station serves as an intermediate stop of Amtrak's "Cascades" and "Coast Starlight" routes and , along with King Street Station in Seattle , is one of two western termini of the "Empire Builder" . 
<triplet> Amtrak <subj> Cascades <obj> item operated <subj> Coast Starlight <obj> item operated <triplet> Cascades <subj> Amtrak <obj> operator <triplet> Coast Starlight <subj> Amtrak <obj> operator <triplet> King Street Station <subj> Cascades <obj> connecting service <subj> Coast Starlight <obj> connecting service <subj> Seattle <obj> located in the administrative territorial entity <subj> Empire Builder <obj> connecting service <triplet> Empire Builder <subj> Amtrak <obj> operator