In the second century AD, Teotihuacán was the largest and most important metropolis of Mesoamerica.
Location: State of México, Mexico
Time to Build: 200 Years
Great Pyramid of Giza
Al Haram, Giza Governorate Egypt
Egyptologists believe that the pyramid was built as a tomb over a 10 to 20-year period concluding around 2560 BC.
Siem Reap, Cambodia
Built in the 12th century. Estimated construction time of the temple is 30 years by King Suryavarman II, dedicated to Vishnu (Hindu), replica of Angkor Thom style of art.
Designed by Spanish architect Antoni Gaudí (1852–1926), it has been under construction since 1882 – 134 years and counting. The building is now 70 percent complete and on track to be finished in 2026.
Christ the Redeemer
Rio de Janeiro, Brazil
Created by Polish-French sculptor Paul Landowski and built by the Brazilian engineer Heitor da Silva Costa, in collaboration with the French engineer Albert Caquot. The face was created by the Romanian artist Gheorghe Leonida. Built in 5 years (1926-1931).
The Colosseum, then known as Flavian Amphitheater, was commissioned around 70-72 by Emperor Vespasian of the Flavian dynasty as a gift to the Roman people, and was completed in 80 under his successor and heir Titus. Approximately 6-8 years construction time.
Agra, Uttar Pradesh, India
Commissioned in 1632 by the Mughal emperor, Shah Jahan to house the remains of his cherished wife, Mumtaz Mahal. Construction took approximately 20 years.
Empire State Building
New York, New York
The Empire State Building was designed by William F. Lamb from the architectural firm Shreve, Lamb and Harmon, which completed their original drawings in just two weeks. Built between March 17, 1930 and April 11, 1931. Completed in 1 year and 45 days.
Secrets of the Dead: Teotihuacán’s Lost Kings, premieres nationally Tuesday, May 24 at 9 p.m. on PBS (check local listings).