Be prepared to have your mind bent, blown and rewired as you walk into the Lange Voorhout Palace where the illusory work of famous graphic artist M.C. Escher is exhibited. The palace is home to such legendary Escher paintings as 'Air and Water' in which birds are blended into fish and 'Waterfall' in which water appears to flow upwards instead of down. There are interactive experiences on the second floor, dedicated to the Eye of Escher where guests are encouraged to solve some of Escher’s most perplexing mysteries, including the impossible Penrose Triangle. On the third floor, there is a large-scale optical illusion where adults can appear to be children and vice versa. Audio tours and guided tours are available and there are additional temporary exhibitions taking place on occasion.

Residence of the bishops and later the archbishops of Reims, this palace is now the museum of the architectural construction of the cathedral. Visitors can still see how the palace used to look during the 16th century.

One of the oldest and most significant museum foundations in Germany and one of the world's most outstanding art museums, featuring masterpieces from seven centuries of art. Here you will find works of art by masters like Rembrandt, Renoir, Rubens, Van Eyck and Botticelli. The completion of the Städel's underground extension is one of the most important events in the art institute's long and celebrated history. The groundbreaking architecture of the new hall is a must-see for visitors of Frankfurt.

Milan doesn’t have as many artistic treasures as Venice and Florence, but it does not fall too far behind. The city’s foremost art museum, the Pinacoteca di Brera, showcases works by Mantegna, Giovanni Bellini, Bramante and Caravaggio, among others.