Airplane over Karls Church, Vienna (Austria 1947)

Stamp Airplane over Karls Church, Vienna it reflects the thematic directions:

A tower is a tall structure, taller than it is wide, often by a significant factor. Towers are distinguished from masts by their lack of guy-wires and are therefore, along with tall buildings, self-supporting structures.

Aviation is the practical aspect or art of aeronautics, being the design, development, production, operation and use of aircraft, especially heavier than air aircraft. The word aviation was coined by French writer and former naval officer Gabriel La Landelle in 1863, from the verb avier (synonymous flying), itself derived from the Latin word avis ("bird") and the suffix -ation.

An aircraft is a machine that is able to fly by gaining support from the air. It counters the force of gravity by using either static lift or by using the dynamic lift of an airfoil, or in a few cases the downward thrust from jet engines. The human activity that surrounds aircraft is called aviation. Crewed aircraft are flown by an onboard pilot, but unmanned aerial vehicles may be remotely controlled or self-controlled by onboard computers. Aircraft may be classified by different criteria, such as lift type, aircraft propulsion, usage and others.

A church building, often simply called a church, is a building used for Christian religious activities, particularly worship services. The term in its architectural sense is most often used by Christians to refer to their religious buildings, but it is sometimes used (by analogy) for buildings of other religions. In traditional Christian architecture, the church is often arranged in the shape of a Christian cross. When viewed from plan view the longest part of a cross is represented by the aisle and the junction of the cross is located at the altar area. Towers or domes are often added with the intention of directing the eye of the viewer towards the heavens and inspiring church visitors. Modern church buildings have a variety of architectural styles and layouts; many buildings that were designed for other purposes have now been converted for church use; and, similarly, many original church buildings have been put to other uses. The earliest identified Christian church was a house church founded between 233 and 256. During the 11th through 14th centuries, a wave of building of cathedrals and smaller parish churches occurred across Western Europe. A cathedral is a church, usually Roman Catholic, Anglican, Oriental Orthodox or Eastern Orthodox, housing the seat of a bishop.