The flaming bottle was thrown at the German Parliament building on the side facing the Tiergarten at around 2am.
Police said on Monday morning the Molotov cocktail burnt out on the steps of the Reichstag facing Paul-Löbe-Allee. It did not spread and no one was injured.
Despite tight security around Germany's most famous building, which houses the country's parliament (Bundestag), the thrower escaped.
Officers said they were investigating attempted arson and believe one person was behind the attack.
Police suspect the attacker had a political motive.
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