The imposing Bala Hissar Fort was once the seat of Afghan Durrani royals. Ownership was transferred to the Sikhs in the 19th century, with the fort eventually being rebuilt by the British to achieve its current look. Bala Hisar now houses the paramilitary forces of Pakistan, making it difficult to look inside, but an on-site museum is open to the public.

Hilo is a region of Hawaii known for its dramatic waterfalls, fertile rainforests, blooming gardens and its geographic inverse of the volcanic Kohala Coast. Hilo is also the gateway to Hawaii Volcanoes National Park, located 45 minutes south. You'll find plenty to do with a collection of renowned museums, art galleries, unique shops and everlasting favorites like the Hilo Farmers Market.

Each year the Yi Peng tradition turns the city of Chiang Mai into a sea of floating lights. Hundreds of paper lanterns are sent to the sky in order to celebrate Buddha and to bring luck and happiness to the people. You shouldn't miss out on this spectacular event which usually takes place on the full moon of the 12th month of the Thai lunar calendar (usually in November).

Near the Stock Palace and the Douro River is another UNESCO World Heritage site that is well worth visit while in Porto, the Monument Church of St Francis, or Igreja Monumento de São Francisco. This church built around the 14th century has one of Europe's most sumptuous and extravagant interiors. Here, all that glitter is, in fact, gold! Its interior is covered in gilded woodwork, and rumour has it that it was used around 400 to 600 kg of gold to decorate it. Hence why the St Francis Church is also known as "The Golden Church". Another highlight of this church is its impressive Tree of Jesse, a wooden sculpture carved by Filipe da Silva and António Gomes in 1718 depicting the ancestors of Jesus Christ, shown in a branching tree — considered to be one of the best in the world of its kind. Under the church, you will find the catacombs, where the Franciscan monks along with the members of Porto's noble families are buried.