A street in the Roman city of Timgad, Algeria, where the tracks left by the wheels of carts can still be seen.

Timgad, also known as Thamugadi, is an ancient Roman city located in modern-day Algeria. Founded by Emperor Trajan around 100 AD, it served as a military colony and is renowned for its exceptional preservation and Roman urban planning. The city was laid out in a grid system, with two main streets, the cardo (north-south) and decumanus (east-west), crossing at right angles​

Timgad includes well-preserved structures such as a 3,500-seat theater, a library, four bathhouses, and the impressive Arch of Trajan. The city also became a center of Christian activity during the 3rd century and was later revived by the Byzantines before being abandoned in the 7th century​.

Today, Timgad is a UNESCO World Heritage Site and is often referred to as the "Algerian Pompeii" due to its remarkable state of preservation.