Europe

Cologne Zoo, founded way back in 1860, is not just one of the oldest zoological gardens; it's also one of the most cutting-edge. Walking through the zoo feels like flipping through a living history book. You can see the evolution of zoological garden

Roy Lichtenstein's "M-Maybe," Andy Warhol's "Brillo Boxes," and George Segal's "Restaurant Window" are all legendary pieces of American Pop Art. These masterpieces arrived at the Wallraf-Richartz-Museum in 1969 as a loan, showcasing the bold and revo

The Cologne Cathedral proudly stands as the second tallest structure in the city, only outdone by the telecommunications tower. Its sheer scale is awe-inspiring: the Cathedral stretches an impressive 145 meters in length, with the cross nave spanning