Cologne

By far the city's most famous attraction, the Cologne cathedral was built to house the reliquary of the Three Kings. Construction began in 1248, however, it wasn't finished until 1880!

Founded in 1860, Cologne's zoo is world renowned. With over 700 species on display, it has an aquarium and inveterbrate house, although its emphasis is on primates.

Located in the Old Town, Cologne's superb chocolate museum covers the entire history of the world's favorite treat from its Central American origins to its modern day production.

Cologne's Roman fortifications take you about as far back into the city's history as is possible to go. The tower is at Ulrepforte, along with the best preserved section of wall.

Known as the "Love Bridge" for its countless engraved padlocks honoring star-crossed couples, it's the best way across the Rhine to the cathedral, if not everlasting happiness!

One of the city's oldest museums houses an eclectic mix of religious art and iconography in its exemplary exhibition rooms. To this day it's run by the Archdiocese of Cologne.

Enter from the main entrance at Riehler Strasse to discover a modest yet picturesque park peppered with quirky, modern sculptures. The best part is that it's free!