Fodor's Expert Review Musée d'Art Moderne Grand-Duc Jean (MUDAM)

This gem of a gallery, on the western edge of the Kirchberg plateau, is as much an architectural landmark as it is a museum. The designs of architect I.M. Pei make this stunning edifice as eye-catching as the works of modern art on show within. The building is a mix of limestone and glass—the latter formed into pyramids that both mimic the church spires of the old city across the Alzette valley, and echo Pei's similar work for the Louvre in Paris. The museum's interior is light and airy and the perfect foil for the changing exhibitions by internationally renowned contemporary artists. There are no permanent displays, so repeat visits are always rewarding. Entrance is free between 6 and 9 pm on Wednesday.