There is the ancient and as yet unexplored site of Atarneus is located nearby. The site is called "Atarna" locally.
Dikili is the birthplace of Greek American artist and left-wing activist Aristodimos Kaldis (1899 – 1979) and Stratis Pelekidis (1880/1882 - 1958), Greek archaeologist.
Dikili town center is situated opposite the Greek island of Lesbos. A small islet within Dikili district (called Garip Adası locally, with ancient sources also citing the name Argounissai) made international headlines in April 2007. The islet is offered for sale by its proprietors and The Guardian reported the Greek islanders of Lesbos raising money among themselves to buy the islet.
There is a crater lake in Merdivenli village, and ancient caverns in Demirtaş and Deliktaş villages, as well as pine forests extending towards the Madra Stream. There are thermal springs, which are in Nebiler, Bademli and Kocaoba villages. There are also beaches in Bademli and Denizköy. The Merkez Mosque is a rare example of a wooden construction dating from 1789. It was built without using any nails in the construction.