Jungfraujoch is named as "Top of Europe" but it is neither the highest peak nor the highest viewing terrase in Europe.
There are three peaks with interesting names here, Eiger (Ogre), Moench (Monk) and Jungfrau (Young Girl), and Jungfrau is definitely the most famous one among them. Jungfraujoch is the saddle between the Moench and the Jungfrau.