The Louvre is the world's most visited museum, receiving 7.3 million visitors in 2016. The museum is housed in the Louvre Palace, originally built as a fortress in the late 12th century under Philip II. Remnants of the fortress are visible in the basement of the museum.
Answer by Ceyhun erdogan. Retroperitoneal organs are found behind the peritoneum, between it and the abdominal wall. These include the kidneys, adrenals, and pancreas.nswer by Ceyhun erdogan. Retroperitoneal organs are found behind the peritoneum, between it and the abdominal wall. These include the kidneys, adrenals, and pancreas.
Human Anatomy Â» Digestive System Â» Retroperitoneal Space. Retroperitoneal space is the anatomical space in the abdominal cavity behind the parietal peritoneum. It extends from the 12 th thoracic vertebra and 12 th rib above to the sacrum and iliac crest below.The floor of the space, that is the posterior wall of the abdomen in this region, is formed by; 1  Psoas muscle.2  Quadratus lumborum muscle. 3  Origin of transverses abdominis muscle.he floor of the space, that is the posterior wall of the abdomen in this region, is formed by; 1  Psoas muscle. 2  Quadratus lumborum muscle. 3  Origin of transverses abdominis muscle.