Germany's oldest city is pure history: it boasts eight UNESCO World Heritage Sites, many dating back to the Roman age. The Porta Nigra and the Cathedral, Germany's oldest, are just a few of the rich heritage of what is also called the "Rome of the North". Trier is also noted as the birthplace of Karl Marx, with a museum paying homage to the great thinker's life and work.

The amount of churches in Lima can be overwhelming to a first-time visitor. Wherever you look, you will find beautiful religious buildings rich in both architectural detail and history, especially when walking around the city centre. To make your life easier, we have selected five churches that are well worth visiting: 1. Lima Metropolitan Cathedral (2nd picture) In the city's main square, the cathedral is not only Peru's most important catholic church but also the first one ever built, dating back to the foundation of Lima in 1535. Inside the cathedral lie the bones of the city's conquistador, Francisco Pizarro. 2. Basílica and Convent of San Francisco (1st picture). A curious fact about this church is that it was built on top of catacombs, which served as a cemetery during colonial times. A visit to its basement will surprise you with bones and skulls of around 25 thousand people. 3. Sanctuary of Saint Rose of Lima. It was erected in the exact place where Santa Rosa was born. Here, you can explore the grounds where the city's patron lived and treated the poor. 4. Basilica and Convent of San Pedro. Many consider it to be the most beautiful church in Lima. Check out its magnificent interior and see for yourself. 5. Parroquia Santa María Reina. Its unusual oval shape is the big draw here. *Bonus: Church of La Merced. Even if you decide not to enter this one, just take your time admiring the stone carvings on its beautiful facade.

GSA Gallery (Gallery Andersson / Sandström) is situated in the old hospital area of Umedalen and specializes in displaying international contemporary art, with a particular emphasis on sculpture. For more information about the current exhibitions, take a look at their website.

Völklinger Hütte, one of the world's largest iron works spreading across six hectares, was established in 1873, and has remained remarkably intact during its operation spanning the next hundred years. Today, as a UNESCO World Heritage Site, it functions as a museum and science centre, offering interesting insight into the industry's history.