Seen from the train, Durham presents a magnificent sight, with cathedral and castle perched atop a bluff enclosed by a loop of the River Wera, and linked to the suburbs by a series of sturdy bridges.

Located in central Germany, Frankfurt is a vibrant cultural and economic hub nestled on the Main River. Museums and architectural gems abound in Frankfurt, from the Goethe House, to the picturesque timber houses of Römerberg town square, to the Museumsufer, a collection of museums lining the banks of the Main.

There's nowhere else like it in Britain. Once you reach Newcastle you know you've arrived. By road or rail - all at once everything drops from view except the Tyne Bridge. An impressive sight, the bridge is the symbol of Newcastle the world over.

Horta sits on the southeastern coast of Faial Island in the Azores, long defined by its position in the mid-Atlantic. For centuries it served as a critical stop for whaling ships, transatlantic sailors, and later yachts crossing between Europe and the Americas.

Novi Sad, Serbia’s second-largest city, sits along the banks of the Danube River and has long served as a cultural meeting point in the Balkans. Its centerpiece is Petrovaradin Fortress, a massive 18th-century stronghold nicknamed the "Gibraltar on the Danube." The fortress is known not just for its historic architecture but also for its network of underground tunnels and the iconic clock tower where the hands are reversed, meaning the large hand shows the hour.