Just outside Bilbao, in Biscay, the Vizcaya Bridge (Puente Bizkaia) — also called Puente Colgante or the Hanging Bridge — is the world’s oldest transporter bridge, completed in 1893. It connects Portugalete and Las Arenas (Getxo) across the Nervión River and was declared a UNESCO World Heritage Site in 2006. You can cross either by the gondola, which carries vehicles and passengers in about 90 seconds, or on the pedestrian walkway, accessed via lifts in the towers. The bridge stands 45 m high and 160 m long, and its iron-and-steel design was a milestone of industrial-age engineering.

Occupied in the Roman period, San Giorgio Maggiore is one of the several islands around Venice. At the beginning of the 19th century, after the Republic fell, the island became a free port housing Venice's artillery. This is another perfect opportunity to capture a gorgeous panoramic view of Venice, especially from the top of the Basilica of San Giorgio Maggiore's bell tower.

This stunning Art Nouveau theatre is worth a moment of your time. It was established in 1901 and reopened in 2010 after renovation. You can get a free guided tour through the highlights of the building, and the theatre's program is very interesting as well.

The Bridge of Sighs (Ponte dei Sospiri) has inherited its sad name from the condemned prisoners crossing it on their way to the execution. The covered bridge connects the prison to the interrogation room in the Doge's Palace and crosses Rio di Palazzo. If you happen to pass under it at sunset, at the time the bells of St Mark's Campanile ring, remember to kiss your loved one: as the legend goes, your love will be eternal.