---
node: spot_chichen_itza_el_caracol
type: spot
slug: el_caracol
destination: dest_chichen_itza
title: "El Caracol"
lead: "El Caracol is a round tower on a double platform, built as an observatory: its windows line up with the extremes of Venus and with sunset at the equinoxes. The name means snail, for the spiral stair inside."
published: 2026-08-12
updated: 2026-08-12
image_file: spot_chichen_itza_el_caracol.jpg
image_source: "https://commons.wikimedia.org/wiki/File:Caracol_cyark.jpg"
image_author: "CyArk"
image_license: "CC BY-SA 3.0"
---

## Overview

Round buildings are rare in Maya architecture and this one is not aligned with the rest of Chichén Itzá, but with the sky. Of the surviving window sightlines, several correspond to the northern and southern extremes of Venus, which the Maya tracked closely enough to record its cycle in the Dresden Codex. The upper chamber is ruined, so what the instrument could do is partly reconstructed from the stubs that remain.

## Highlights

Stand back to the north-west to see the tower against the platform corners, which is how the alignment reads. It is on the way between El Castillo and the Nunnery group and is easy to pass at a glance. The site museum explains the Venus cycle better than the panels here do.