Kastamonu lies in Turkey's Black Sea Region, in the inland part of the western Black Sea area south of the coast. The city sits in a mountainous setting, surrounded by forested mountains, near a river, with a strong natural backdrop framing its historic urban fabric.

The city's historic identity is defined by Ottoman-era houses, religious buildings, and civic architecture gathered around the old core. Kastamonu Castle overlooks the city, while Nasrullah Mosque and Saat Kulesi remain among the key monuments visible in the center. Together, they give Kastamonu a compact historic center of traditional streets, major landmarks, and a clearly recognizable skyline.

Kastamonu brings together cultural sightseeing, walking, local food, and short nature excursions in a single trip. Its compact layout and preserved urban heritage make it well suited to a short vacation or a travel-guide-style visit explored on foot. It also works well as a base for pairing historic streets and monuments with nearby mountain landscapes.

The main visitor areas are the city center, the castle area, and the Nasrullah area. Between them, these zones hold the historic core, walking routes, major monuments, and viewpoints over the urban center. Kastamonu Airport serves the city and is a short drive from the center, while intercity bus connections link Kastamonu with major Turkish cities, though access is less direct than in larger metropolitan destinations.

Kastamonu has colder, snowier winters than much of the Black Sea coast because of its inland and elevated position. Spring and autumn are comfortable for walking, and summer suits trips that combine the city with nearby nature. The best periods to visit are spring, summer, and autumn, while winter is less suitable if easier road travel and extended walking are priorities.