The village is connected by road and Šumná major road connection from Praha-Vranov. The village falls under the left bank of the Swiss Bay Vranov dam, including the third dam body. Historical records mention the place is already the 28th September 1323 as part of Vranov estate and King John of Luxembourg, it gives the Henry Lipe substitution for other goods. At the village invited Unašov (Uneschow) him. Windschau. Land records from 1350 Onschow already appointed place, some of which are children of Luke Dobšovým. Written evidence of the record yet another ownership change in 1358, 1365, 1371 and I can see the names of successive purchasers of the courts and acres of Onšova Ulrich, Marsik of Onšova, Peter of Onšova, Miklas from Prachatice. Since 1516, points belonging to the estate vranovskému.
An interesting reference is the record of the year 1535, when the place spoken of as the deserted village again obydlované since 1550. After the Thirty Years War brought more people into Onšova Czech nationality. The triangular village green with a small pond is 1754 from the chapel dedicated to St. Ann, fitted with two smaller bells, as tribute to the late 18th century. In 1850 there were 138 people with a strong Czech minority has already prevailed in 1900 the German population.
Sightseeing: in the village chapel. Anna of 1835, the land next three chapels of the Cross.
Nearby: Clary's Cross - a monumental cross from Athene cast on a rock above the dam Vranov dam. Built by Earl Stanley of nuns after the death of his friend - a writer, painter and humanist prince Clary, who in 1830 while visiting the Vranov cholera epidemic has infected a year later he died. This place is a wonderful view of the artificial lake, dam, Thaya valley below and the very Vranov.