'Artefact' is a recurring two-page spread, which features a beloved object presented by one of the BK City staff members. Every month, the author passes on the 'Artefact'contributorship to the next. Last month's contributor Nathalie de Vries chose Paul Vermeulen, who is a professor in the department of Architecture and leads Belgium based architecture office de Smet Vermeulen.

For a large majority of the student body of TU Delft, the four-year-long siege of Sarajevo (1992-1996), is a thing they might have learned from history books. However, for the inhabitants of Sarajevo, the small red-raisin-filled craters from mortar damage are a daily reminder of their tragic past and what became the longest siege of a city in the history of modern warfare.

Land sculpture has arguably existed for thousands of years, in which case studies such as Nazca lines (see photo) and Indian burial mounds were identified as one. These ancient augmentations of the land surface could be ceremonial, or symbolic in nature. Nevertheless, these sculptures exhibited spatial qualities inherent in architecture and landscape design, and inform us about the increasingly ambiguous distinction between them.