This extensive collection of all things Christopher Columbus is housed over four floors in the centre of Valladolid. Learn about the voyages of Columbus and Spain's conquests in America. Lovers of old maps and machinery will delight in the interactive exhibits, while the top floor, dedicated to life in medieval Valladolid, should be visited by anyone with an interest in history.

One of Reykjavík's most iconic landmarks and a must-visit while in Iceland is Harpa, the city's concert hall and conference centre, as well as home to the Icelandic Opera and the Icelandic Symphony Orchestra. Located by the old harbour, near the centre of Reykjavík, this striking bit of contemporary architecture boasts a glass facade, which covers the entire building featuring honeycomb panels, which change colours during the day as they reflect the sky and the ocean. At night, a light show makes the building look even more magical.

Completed in the middle of the 17th century, the Wazir Khan Mosque is ornately decorated with traditional architecture additions of the Mughal-era. Moreover, does the complex host several shops and is the resting place to Syed Muhammad Ishaq Gazruni, whose tomb is placed in the complex. The different creative expressions inside the mosque, will amaze you and make it hard to take your eyes of the colourful ceilings.

Stepping into the Frankfurt Zoo is like entering another world: hold on to your hat while you marvel at all the majestic African animals and the exciting, colourful world of Madagascar. The list of foreign and exotic places and settings goes on and on and there is a total of 4,500 animals and over 500 species from across the globe here. Apart from the fixed features, there are festivals, exhibits and themed tours to enjoy as well.