Is there a service for determining the city from which the visitor came?

Question

Geolocation

Prompt the service for determining the city from which the visitor came and the output of this city in the test version.
There is a landing page selling solar panels. It is necessary that a visitor from Samara, when entering the site, sees the heading Buy solar panels in Samara, and a visitor from Kazan sees his city.
P/S Doing a manual page for each city is not an option.

Answer 1

Anyway:
JavaScript implementation:
jsfiddle.net/58Vgz
dev.maxmind.com/geoip/legacy/javascript
or if you're comfortable with English city names jsfiddle.net/Rx793

Answer 2

Yandex Maps API can be used

Answer 3

Look here and look for more on Habré, there are a lot of such articles there.