If you hold a UK passport and you're arriving in Turkey as a tourist from 2nd March 2020, then no, you do not need a Visa in order to enter the country.
Your passport should be valid for a minimum period of 6 months from the date of entry into Turkey and will be stamped with your date of entry on arrival. You will need to have a blank page available in your passport for this. Your passport will also be stamped with the date of exit when you leave the country.
If you are travelling to Turkey prior to 2nd March 2020, a tourist Visa will still be required. You can purchase one at a cost of $35 via the official website: https://www.evisa.gov.tr/en/ (beware of non-official websites that will charge considerably more than this).
The latest information regarding entry requirements for UK nationals can be seen here: https://www.gov.uk/foreign-travel-advice/turkey/entry-requirements#visas
Residents from other countries will need to check their individual Visa and passport requirements.
Dalaman international airport is the closest to Kalkan (1.5 hours drive). Antalya is the second closest (3 hours drive).
There are lots of things to see and do during your visit to Kalkan - it's a place that seems to cater for all ages and tastes. Regular visitors are already aware of its numerous attractions and charms, but for those of you who have not visited Kalkan before, the following links will give you some idea of what to expect and what you can do in the area: