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The oldest suburb of Tallinn, dating back to the 14th century. It was probably inhabited by fishermen (Kalamaja means "Fish house") and mostly houses workers. The current wooden buildings are from the 19th century.
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Built by Tsar Nicholas I in 1820 as a fortress to protect the city from the sea-born attacks, it was turned into a notorious KGB prison in 1920. The prison ceased operations in 2004.
Lennusadam
Lennusadam, literally "air port", was constructed in 1916 for the purpose of serving the seaplane fleet with a spectacular, three-domed concrete hangar. Today, it serves as an outpost of the Maritime museum, serving its large collection of complete ships, aeroplanes and maritime and military equipment too large to fit the Fat Margaret. Inside the hangar, the highlight is the complete submarine Lembit, whose interior can be visited as well, a shipwreck from the 16th century and a collection of smaller boats and seaplanes. The crown of the collection moored outside in the harbour is the steam-powered icebreaker Suur Tõll. Throughout the museum, a number of state-of-the-art technologies and solutions are employed for a more engaging and enjoyable visit, and the museum has a wide range of activities and tours on offer. As the Seaplane Harbour is a bit out of the way, those getting peckish can enjoy a meal at the museum's restaurant Maru inside the hangars.
PROTO Avastustehas
Indoor amusement park where amusements take place with the help of VR glasses.
Stenbocki Maja
Today, the Stenbock House is the seat of Estonia's government, but it was built as a courthouse in late 18th century, at the behest of the erstwhile Russian authorities. The Russian treasury eventually found itself unable to pay for the building, so the Count Stenbock, who erected the edifice, was left with it as his personal residence. The treasury was only able to buy it more than a century later, when it finally became the courthouse it was intended to be.
Oleviste kirik
Built in the 12th century. Today it is a Baptist church and probably the most visible landmark on the northern end of the Old Town. When Estonia was part of the Soviet Union the tower was used as a radio tower and a surveillance point.