16 of the most important and top secret buildings in the world (RUMBLE ONLY)

9 months ago
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Travel the most important and top secret buildings in the world

Because of their secrecy, it is difficult to pinpoint the world's "top secret" buildings, but there are a number of well-known buildings that are regarded as some of the most significant and secretive because of their roles and limited access. Here are eight examples of such buildings:

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