Argentina Australia Austria Belgium Brazil Bulgaria Canada China Czech Republic Denmark Egypt Estonia Finland France Germany Greece Hong Kong Hungary Ireland Israel Italy Japan London Luxembourg Mexico Netherlands New Zealand Norway Paris Poland Portugal Rome Russian Federation Saudi Arabia Singapore Slovakia South Africa Spain Sweden Switzerland Thailand Turkey United Arab Emirates United Kingdom United States

Hölderlin’s tower in Tübingen ?

Sears Tower or Willis Tower in Chicago ?

The Torre Agbar in Barcelona ?

One World Trade Center in New York City ?

The tallest building in the European Union ?

The Two Towers of Bologna ?

Where is The Kremlin located ?

The tallest twin buildings in the world ?

Where was the Eiffel Tower initially planned to be built ?