Visit Palenque

Ancient city of the Sun and Moon pyramids.

Four basalt Toltec warriors, five metres tall, standing where their temple roof used to be.

Maya temples rising above the jungle.

Four-day jungle trek to terraced ruins older than Machu Picchu.

Belize's largest Maya city in the jungle.

The "museum without walls": grassy royal burial mounds, the Cheomseongdae observatory and Silla-dynasty treasures across the town.

Ceremonial capital of the Persian Empire.

Xi'an's buried army of clay warriors.