Many languages have a specific word for this number: in Ancient Greek it is μύριοι (related to the word myriad in English), in Aramaicܪܒܘܬܐ, in Hebrew רבבה (revava), in Chinese萬/万 (Mandarin wàn, Cantonese maan6), in Japanese万/萬 [man], in Korean만/萬 [man], and in Thai หมื่น [meun]. It is often used to mean an indefinite very large number.
Land of 10,000 Trails or 10000trails.com was originally created in 1999 by the TN/KY Lakes Area Coalition. This organization is made up of individuals in West Tennessee and West Kentucky, who have an interest in seeing tourism grow by developing trails throughout their region. 
In futurology, Stewart Brand in Visions of the Future: The 10,000-Year Library proposes a museum built around a 10,000 year clock as an idea for assuring that vital information survives future crashes of civilizations. 
Ten Thousand a Year 1883?. A Drama, in three acts. Adapted from the celebrated novel of the same name, by the author of the Diary of a Physician, and arranged for the stage, by Richard Brinsley Peake
Anabasis, by the Greek writer Xenophon (431–360 B.C.), about the Army of the Ten Thousand – Greek mercenaries taking part in the expedition of Cyrus the Younger, a Persian prince, against his brother, King Artaxerxes II
Revelation 5:11 And I beheld, and I heard the voice of many angels round about the throne and the beasts and the elders: and the number of them was ten thousand times ten thousand, and thousands of thousands;(KJV)The Apocalypse of John
12758 – largest number that cannot be expressed as the sum of distinct cubes
12765 – Finnish internet meme; the code accompanying no-prize caps in a Coca-Cola bottle top prize contest. Often spelled out yksi – kaksi – seitsemän – kuusi – viisi, ei voittoa, "one – two – seven – six – five, no prize").