During the Classic Period of Maya civilisation between 250 to 900 AD, the Maya constructed towering pyramid temples, beautiful palaces and finely decorated buildings adorned with intricate sculptures and ornately carved masks. Notable examples include Chichén Itzá, a site in Yucatán, Mexico, which boasts at its heart a 30m-high (98ft) pyramid called the Temple of Kukulcán. There is also Temple IV, a 65m-tall (213ft) pyramid in the ruins of the ancient Maya city of Tikal in modern Guatemala.