With the help of modern multimedia, the Seaplane Harbour in the wooden architecture suburb Kalamaja tells exciting stories about the Estonian maritime and military history promising a "sea full of excitement" for the whole family in an area that would take nearly 2 million A4 paper sheets laid down side by side. The museum’s display that comprises of more than a couple of hundred large exhibits revitalizes the colourful history of Estonia. In the outdoor area, visitors can tour a collection of historic ships, including the Suur Tõll, Europe's largest steam-powered icebreaker.

The late Renaissance St Peter's Basilica is an iconic landmark of the Vatican City, a monumental structure that the likes of Michelangelo helped bring into existence. Today, the basilica is open to visitors wishing to explore its inside naves and chapels and see works of art by great masters such as Raphael and Bernini. While here, don't miss out on climbing to the top of the dome, where the stunning view of St Peter's Square awaits you.

The name of this massive, 38-metre-high cannon tower and museum of the town’s defences literally means “peek into the Kitchen". It was so high that Medieval guards joked they could see right down the chimneys and into the kitchens of the houses below. Make sure to pay a visit to the top floor cafe for beautiful Old Town views.

Teatro dell'Opera di Roma is an Opera House that still preserves its distinctive features of the 19th century. Since opening its doors in 1880, this historic venue has hosted numerous notable productions, including the world premiere of Puccini's iconic opera, Tosca. Its resplendent red-and-gold interiors and rich historical significance make it a captivating destination, appealing even to those not particularly drawn to opera. Note that during summer, the ravishing ruins of the Baths of Caracalla are the venue for the opera company's outdoor performances.