Steinwache Memorial and Museum is a museum that documents persecution and resistance during the Nazi regime. Established in a former police station that, under the Gestapo, was known as ’’West Germany’s Hell’’ because of the torturing of the opponents of the Nazi regime. The museum exhibits documents, photographs and even the interior of the prison cells to give an impression to its visitor.

The National Archaeological Museum, in Exarchia, is home to Ancient Greece’s most spectacular pieces. One room contains Schliemann’s finds from Mycenae, another has the famous frescoes from Santorini on display. There is also a fine collection of idols from the Cyclades and ceramics from all parts of the Mediterranean. The star of the museum is the Antikythera Mechanism, an ancient hand-powered orrery, described as the oldest example of an analogue computer used to predict astronomical positions and eclipses decades in advance. This scientific marvel is dated somewhere between 205 and 60 BCE.

For sweeping views of the city from Seoul's highest point, head to the observation deck of Seoul Tower - a local landmark and attraction that's been in operation for over three decades. The top floor features an upscale revolving restaurant; other eateries and attractions operate on-site.