Malbork Castle: red brick writ large // Malbork, near Gdansk, Poland (Krzysztof Dydynski/LP)

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Malbork Castle: red brick writ large

Where: Malbork, near Gdansk, Poland
Unique-selling point: It's made almost entirely out of red bricks.
Visitor highlights: Malbork Castle's red-brick look is pretty singular but its size and history are what draw most people in. This is the largest Gothic castle in Europe, with a sprawling series of buildings within its confines. It was also a base for the Order of the Teutonic Knights, a group of Germanic do-gooders who stuck their noses in where they weren't universally welcomed throughout Europe and the Middle East. Unfortunately, you can explore by guided tour only.

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