Start by taking in the whole city at a glance - In the Zielgalerie (MyZiel Shopping Center) ride the elevator up to the 8th floor observation platform where kids will be able see all of Frankfurt.
Eschenheim Tower (Eschenheimer Turm) - Visit an impressive 14th - 15th century watchtower, once a part of the medieval city fortifications, and the oldest building in Frankfurt. The round tower is 47 meters high, topped with a spire and turrets. Stop into the cafe at the bottom of the tower for a coffee and kuchen.
Goethe House (Goethehaus) - "On the 28th of August, 1749, at noon according to the Glockenschlage, I came to Frankfurt am Main and the world..." so begins Goethe's autobiography. In the house and museum, find out about Goethe's family life and childhood growing up in Frankfurt.
Judisches Museum - Located in the Rothschilds' original mansion (the Rothschild Palais) you'll learn the story the second-largest Jewish community in Germany before the Holocaust - and about one of the great banking families of the world.