El Castillo (Chichen Itza) — founded 750
El Castillo (Chichen Itza) traces its beginnings to 750, part of the Medieval (8th century) — a founding moment that shaped everything that came after.
Context
Medieval — Kingdoms rise, faith spreads, castles and codices. That's around 1220 years ago — deep history, roughly 12 centuries in the past. Around the same time, the world was also seeing Śrīdhara or Śrīdharācārya (750) and Śrīdhara or Śrīdharācārya, Indian mathematician (750).
Why it matters
The founding of El Castillo (Chichen Itza) in 750 created something durable — a place, institution, or movement that outlasted its era and became a reference point for what came next.
Did you know?
Just 0 years after, Śrīdhara or Śrīdharācārya (750) was also making headlines — a reminder how much history can compress into a single decade.
Era
Medieval
Kingdoms rise, faith spreads, castles and codices.
Category
Places
Places are the cities, monuments, and landmarks whose stones and streets carry centuries of memory.
Contemporary events
What else was happening in the world around this time.
Sources & further reading7 verified references · tap to open
About this lesson. Overview, context, and “Why it matters” are generated summaries written for study and gameplay. Dates and category placement come from the Timeline question bank[1]; era descriptions are adapted from standard historical periodisation[2]. For primary sources and in-depth reading, use the references below.
- Timeline question bank — © the game's original author, used with permission.
- Era framework based on Wikipedia's Human history overview, CC BY-SA 4.0.
Wikipedia
Community-maintained encyclopedia entry with citations.
Encyclopædia Britannica
Editorially reviewed reference articles.
Library of Congress
Primary sources, photographs, and archival records.
National Archives
Original U.S. government documents and records.
Smithsonian
Museum collections and curator-written explainers.
BBC History
Long-form explainers and documentaries.
History.com
Timelines and topic overviews from HISTORY.
Educational content notice
Lessons are for general historical education, not professional advice. Some entries touch on wars, violence, or other sensitive events — appropriate for ages 9+. External links open in your browser and are not controlled by Timeline.
Quick check
Which of these happened in 750?
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Śrīdhara or Śrīdharācārya, Indian mathematician