Only 70 metres of the Western Wall are visible from the outside, but the shrine continues underground for half a kilometre more. To visit this part, join a guided tour of the tunnels. You will reach the segment of the Wall which was closer to the Holy of Holiest, the most sacred part of Solomon's Temple. Praying here has a particularly deep meaning for Jewish people, and there's a small synagogue for this purpose. Other notable sights are houses and pools from the Second Temple era, imposing stone arches, and an aqueduct from the 2nd century BC.

The National Museum of Ethiopia contains a plethora of cultural artefacts. Its most notable exhibit, however, is the cast of Lucy — a female skeleton of the Australopithecus afarensis species, discovered in Ethiopia in 1974 and dating back as far as 3.2 million years. Art lovers will appreciate the museum's collection of Ethiopian art from the 14th to the 20th centuries.

The rusty towers of Gas Works Park once converted coal and crude oil into gas. After running for half a century and being shut down in 1956, the plant is now the center of a green park on the coast of Seattle and nature is slowly regaining its territories by covering parts of the structure with layers of vegetation. A perfect location for a stroll and a view over Seattle's skyline.

Located an hour from Cardiff, Brecon Beacons National Park is a natural reserve with an area of 1,340 square kilometres. Inside the park it is possible to enjoy many outdoor activities such as hiking, mountain biking, horse riding, bird watching and so on. The park is also perfect for stargazing, as it was recognised as an International Dark Sky Reserve in 2013.