Rome is home to many astonishing churches that boggle the mind, such as the Mausoleum of St Costanza. Tucked away outside the Aurelian Walls, this 4th-century church is an example of early Christian art and architecture. Its mosaics of natural elements, such as birds, palms, and plants, along with the dome and the unusual design make it the perfect setting for couples to exchange their wedding vows.

Tucked into the bohemian Grottes district, Les Schtroumpfs — or the Smurfs buildings — are some of the quirkiest architecture in Geneva. Built in the early ’80s by three architects with a clear nod to Gaudí and comic book weirdness, the buildings look like something out of a fairytale: rounded shapes, bright colours, and almost no straight lines. Locals named them after the Smurfs because they genuinely look like something those little blue guys would live in. The complex houses around 750 families and includes a kindergarten, a dental clinic, and a few cafés, all surrounded by trees and playgrounds. It’s not a tourist hotspot, but definitely worth a quick wander if you’re nearby.

L’Horloge Fleurie is a super-sized watch with a diameter of five metres, made of 6,500 flowering plants and shrubs, symbolising Switzerland’s world-famous watch industry. This symbol has been around since the 1950s, and the decorations and plants are changed in harmony with the season.

While a wax museum might not be among the Eternal City's top attractions, it will probably interest second and third-time visitors with its curious collection of well-known Italian and international figures — from former Popes and ancient Romans to Pavarotti and Winston Churchill — plus a waxworks laboratory open to guests.