Gold & Silver Route 19
The sea south of Fuchsia rolls out to the Seafoam Islands.
Route 19 is in Kanto, with Fuchsia City to the north and Route 20 to the west. In the story it comes after Seafoam Islands and before Route 22.
ROUTE 19 MAP
Pokemon Encounters
Pure water south of Fuchsia. Corsola bites the Good Rod by day, Staryu at night, and Kingler waits on the Super Rod.
Old Rod2
Good Rod4
Super Rod4
Tentacool
Also found in 19 other locations
TRAINERS
4 trainer battles at Route 19. Team rosters, levels, and weakness coverage for each.
Dawn
Route 19 Guide
Yes, and it's new to the series. Gold and Silver run on a real clock split into morning, day, and night, and the grass swaps species along with it. Hoothoot only turns up after dark, for instance, where the daytime route hands you Pidgey. If something won't appear, come back at a different hour.
Material for custom Poke Balls. Routes 37 and 42 and Azalea Town have trees that each drop one Apricorn a day, and Kurt in Azalea turns a color into a matching ball by the next morning. A white one becomes a Fast Ball for skittish Pokemon, a black one a Heavy Ball for heavy catches like Snorlax.