Bulgaria's natural resources include a great variety of minerals.
This scene presents the climate zones and soil types of Bulgaria.
Riverbed engineering refers to artificial modification of the course or flow of rivers.
The animation shows the city of Szeged before it was devastated by the great flood.
Archaeological research has shown that a settlement has existed at the site of present-day Kecskemet, near the Chapel Street, already in the Árpád era.
The castor bean tick is a parasite that feeds on the blood of most mammals, including humans, and transmits several diseases, including the Lyme disease.
The gate tower and the barbican were important parts of the defense system of medieval towns and castles.
This 3D scene presents Titanis walleri, one of the largest species in the genus of 'terror birds'.
Get a glimpse into the life of termites and the structure of a termite mound.
An evergreen bush or tree, the fruit of which is the source of olive oil.
The Thracian Tomb of Sveshtari is one of the most impressive monuments of Thracian art.