The capital of Tajikistan is Dushanbe, which was founded 1923. Dushanbe has been the capital since 1925.
Dushanbe is the largest city in Tajikistan and functions as: Administrative center.
Dushanbe is located at 38.5598° N, 68.7870° E, at an elevation of 2688' ft.
Source: https://flic.kr/p/s4CjHU