In the midst of the rolling hills of Dolenjska, along the banks of the Temenica and Mirna rivers, a special story connects the land, life, work and culture of the people who have lived here since prehistoric times as if in a fairytale, and who know how to keep the abundant energies of the Trebanjska valley flowing. The landscape is easy to travel through and will soon be marked by the Karavanke-Obrežje motorway. Since ancient times this area has been an important crossroads, a fact further demonstrated by excavations from the Roman settlement of Praetorium Latobicorum. The Trebnje municipality spans 194.6 square kilometres and is home to 13,449 people living in 153 towns and villages. Its landscapes include the picturesque rolling hills of Dolenjska covered by forests and vineyards, sprinkled with characteristic farmhouses, stone houses and churches, many of which are renowned as special cultural monuments and architectural curiosities. Medieval frescos have been discovered in some of them. The Mirna river valley northeast of Trebnje and the Temenica River are wonderfully colourful and interesting, with the latter being one of the renowned "ponikalnice" (sinking creeks) typical of the Dolenjska region; it disappears under the ground in two spots before reaching the Krka River.
The 15th meridian runs straight through Trebnje, and a monument marks it on Vrhtrebnje hill (535 m), a popular destination for numerous hikers from Trebnje which offers a beautiful view of Trebnje town and its surroundings. Ever since 1968, Trebnje has hosted an international meeting of “artists of naïve” at the end of each June. The Gallery of Naïve Artists in Trebnje has collected more than 280 works of fine art (statues, paintings, gobelin needlework and reliefs) created by 245 artists from 34 countries. The milestone at Koščak house, the stone relief with three busts in the lobby of the Church of Marijino Vnebovzetje (Our Lady of the Assumption) and the stone lion built into the top of the staircase leading to Trebnje Castle are reminiscent of the times of ancient Rome. Trebnje was the birthplace of Pavel Golia, a poet, theatre director and author of plays for younger audiences. He has his own memorial corner in Trebnje library, which bears his name. Representatives of various areas covered in the municipality are presented by a project in the lobby of the Trebnje Centre for Education and Culture, in the permanent exhibition Rastoča knjiga (The Growing Book).