The Hippodrome of Constantinople was a chariot racing track located in the Byzantine capital of Constantinople (modern-day Istanbul, Turkey). 

It was built in the 4th century AD and was an important cultural and sporting venue in the city. The Hippodrome was also a political and social centre and the site of many important events, such as coronations, parades, and public ceremonies.

The Hippodrome was rectangular, approximately 450 meters (1,476 feet) long, and 117 meters (384 feet) wide. It was surrounded by grandstands and could accommodate up to 100,000 spectators. 

The track was made of sand and used for chariot racing, a popular sport in ancient Rome and Byzantium. The Hippodrome was also used for other sporting events, such as horse racing and athletics.

Today, the Hippodrome is a popular tourist attraction in Istanbul and is located in the Sultanahmet neighbourhood of the city. The site is home to several important landmarks, including the Obelisk of Theodosius, the Serpent Column, and the German Fountain. 

The Hippodrome is a fascinating and historic site and is a must-see destination for anyone interested in the history and culture of Istanbul.