This excavation rivals the famous sites of Pompeii. Once home to around 400,000 residents, ancient Ephesus was built around the temple of Artemis — another marvel among the Seven Wonders of the Ancient World. The ruins we see today primarily hail from the Roman era. The remnants of the Temple of Artemis stand outside the main ruin area, while the hill above is graced with the cathedral of Saint John, said to be the final resting place of the evangelist. Legend holds that Saint John lived in Ephesus alongside the Virgin Mary.

This is the most popular tourist attraction in Sofia. The beautiful orthodox cathedral was built in 1912 and took 30 years to complete. The cathedral was created in honor of the Russians soldiers that died in the Russo-Turkish war and holds up to 10,000 people.

Those interested in learning more about the production process of Cuba's iconic liquor are more than welcome to join a tour of Varadero's House of Rum, during which visitors will get the chance to savour the iconic drink in its many varieties - from the classic dark and light to chocolate and vanilla-flavoured types.

The Unos Torn observation deck, Designed by local architect Tommy Lyberg, offers a magnificent view over the city and Gamlebyviken. Initially, the tower stood at 15 metres, but after an additional donation in 1998, the structure grew 3 metres. Today, it stands 18 metres tall, with the viewing platform situated 34 metres above sea level.