The former winter residences of these two important Americans are today a cultural site that is worth a visit, whether you're interested in history, technology or nature: Thomas Edison set up a laboratory and a botanical garden which you'll be able to explore, together with the historic house interiors and a museum dedicated to the inventor.

The Basilica of St Felix is one of Girona’s oldest churches, a site of continuous worship since the early Christian period. Its architecture is a palimpsest of styles: a Romanesque core, a majestic Gothic nave, and a Baroque façade topped by a distinctive truncated bell tower. The interior safeguards priceless treasures, including eight rare Roman and early Christian sarcophagi and the ornate 14th-century Gothic tomb of Sant Narcís, the city's patron saint. Though never the cathedral, its historical and artistic importance is profound. It remains an active parish church, offering a quieter but deeply atmospheric counterpoint to the larger cathedral nearby.

Right in the centre, this Romanesque palace was Verona’s city hall for centuries. Inside, there’s a small modern art museum and the impressive staircase in the courtyard. The highlight, though, is the Lamberti Tower—climb it (or take the lift) for one of the best views over the city.