hills by Alexander Skowalsky from the Noun Project

A prominent hill in Hannibal, originally known as Holliday's Hill.  Mark Twain named the fictional location from a place in Cardiff, Wales that reminded him of Holliday's Hill.  It figures in The Adventures of Tom Sawyer and Adventures of Huckleberry Finn.  It stands about 300 feet above the Mississippi River, the southern end of a long escarpment that parallels the river.  Rasmussen reports that this is the location from which Sam and a friend rolled a boulder down the hill and through a cooper's shed in town.

Kadifekale (literally "the velvet castle" in Turkish) is the name of the hill located within the urban zone of İzmir, Turkey, as well as being the name of the ancient castle on top of the same hill.
Both the hill and the castle were named Pagos (Greek: Πάγος, Pagus under the Roman Empire) in pre-Turkish times and by the local Greeks in modern times.
The summit where the castle is found is located at a distance of about 2 km from the shoreline and commands a general view of a large part of the city of İzmir, as well as of the Gulf of İzmir.

The Königstuhl (German pronunciation: [ˈkøːnɪçˌʃtuːl]), is a 567.8 metres (1,863 ft) high hill in the Odenwald Mountains and in the city of Heidelberg, in the German state of Baden-Württemberg.

Monte Hacho is a low mountain that overlooks the Spanish city of Ceuta, on the north coast of Africa.

Set in the 18th arrondissement, the charming hilltop Montmartre district (also known as "La Butte") is a former artists' village once inhabited by Picasso and Dalí, and home to the domed Sacré-Cœur basilica. There are sweeping views of the city from its steep, winding streets, while the iconic Moulin Rouge cabaret below draws tourists and nightclubbers. Retro-cool bars and eateries dot the edgy Lamarck area.  (From Google Earth)

The Pnyx (Greek: Πνύκα) is a hill in central Athens, the capital of Greece. Beginning as early as 507 BC, the Athenians gathered on the Pnyx to host their popular assemblies, thus making the hill one of the earliest and most important sites in the creation of democracy.
https://en.wikipedia.org/wiki/Pnyx