Fodor's Expert Review Parc du Cinquantenaire
The most picturesque park in the city is a joy in summer when its shaded grassy lawns and paths fill with joggers, picnickers, dance troupes, and even climbers practicing on its walls. It is home to a number of museums as well as the capital's take on the Arc de Triomphe: the Arcade du Cinquantenaire. Pay special attention to the park's northwest corner where you'll find the Great Mosque. This was originally built as an Arabic-style folly for a national exhibition in 1880 but was gifted to King Faisal ibn Abd al-Aziz of Saudi Arabia to use as a place of worship in 1967, and has remained a mosque ever since.