With 5 million people Berlin is Germany's largest and one of Europe's largest cities from a population perspective. Rich with history, as well as a global hot spot for culture, art, restaurants, clubs and cafes.

Chances are simply by walking around Berlin you will find plenty to do, however here are five things that not everybody knows about Berlin when they visit the city:

1. The Fernsehturm or TV tower is one of Europe's tallest structures at 368 meters or 1207 feet. Built in the former East German part of Berlin, the aim of the building the tower was to show to all Berliners and visitors alike the strength of East Germany.

Still in operation today, there is a visitor deck as well as a rotating restaurant which takes 30 minutes for one complete spin.

2. Currywurst - Although most definitely not unique to Berlin, it is said to have been invented in Berlin in the late 1940's (although there is a claim that it was first heard of in Hamburg). You will find currywurst being sold on just about every other street corner and many take out places. Although recently the latest fast food trend has started to be döner kebabs, with 800 million serves a year (according to Wikipedia), currywurst is still very popular.

3. The Berlin Cathedral - Despite Berlin gaining a reputation of being the atheist capital of Europe according to London's Guardian, religion still does play a major role in the city. Whether you are a believer or not, the protestant Berlin Cathedral, Berlin's largest church is a site to behold. With a rich history dating back to the 1400's, the site of this church as well as the actual building tells a rich story about Berlin going back many centuries. Don't forget to look for the absolutely gigantic pipe organ.

4. Watergate Nightclub - Whether you like electronic music or not, if you can find a way to get into one of Berlin's hottest clubs located right on the Spree (complete with waterfront balconies) it will be an experience well worth your while. Some of the world's hottest djs play at this event, however on quieter nights it is possible just to have a drink here. If you aren't coming for the music, try and visit during the summer.

5. Berlinomat - Located in Friedrichshain, a cool little department store of sorts featuring products designed by local Berliners. You will find cool gadgets, local fashion and somethings that simply can not be described.