This is the western coast of the Balkan Peninsula, against the Adriatic Sea. It’s dominated by Croatia spreading southward, with the exception of a tiny sliver of Bosnia poking through to the ocean. In addition to the mainland coast, there are hundreds of small islands.
The name comes from the original tribe of the area: the Dalmatae.
The dog with the same name was first documented in this area, then popularized in England.
Why I Looked It Up
I encountered it in a book about World War 1. Both Italy and Serbia attempted to take the area from Austria-Hungary.