Circular Walking Bookshelf - part of a The Archive Series by architect David Garcia , though purely a conceptual piece, still very interesting.

The Archive Series are investigations on space and books, aiming to blur the borders between art and design. Clearly non functional, they aim to appeal to the senses, creating a narrative which more often than not, reaches the absurd.

Few in the United States know that the United States possesses some 1,000 military bases and installations outside the fifty states and Washington, DC, on the sovereign land of other nations. Let me repeat that number again because it’s hard to take in: 1,000 bases. On other people’s sovereign territory. 1,000 bases.  More than half a century after the end of World War II and the Korean War, the United States retains 287 bases in Germany, 130 in Japan, and 106 in South Korea. There are some 89 in Italy, 57 in the British Isles, 21 in Portugal, and nineteen in Turkey. Other bases are scattered around the globe in places like Aruba and Australia, Djibouti, Egypt, and Israel, Singapore and Thailand, Kyrgyzstan and Kuwait, Qatar, Bahrain, and the United Arab Emirates, Crete, Sicily, and Iceland, Romania and Bulgaria, Honduras, Colombia, and Guantánamo Bay, Cuba—just to name a few. Some can still be found in Saudi Arabia and others have re- cently returned to the Philippines and Uzbekistan, where locals previously forced the closure of U.S. bases. In total, the U.S. military has troops in some 150 foreign nations. Around the world the Defense Department re- ports having more than 577,519 separate buildings, structures, and utilities at its bases, conservatively valuing its facilities at more than $712 billion.
—  David Vine, Island of Shame: The Secret History of the U.S. Military Base on Diego Garcia