Sinop

A prison that operated inside the walls from 1887 to 1997, best read alongside its literary history.

Where: The historic Sinop prison inside the castle.

A drowned valley: locals call it a fjord, though geologically it is a ria, which makes it no less handsome.

Where: The Hamsilos inlet and nature park.

Twenty-eight waterfalls of varying size on the Karasu; the boardwalk gets slippery in rain.

Where: The Tatlica waterfalls at Erfelek.