Fortress route at Tarnovo, Bulgaria

Tsarevets (Bulgarian: Царевец, romanized: Carevec) is a medieval stronghold located on a hill with the same name in Veliko Tarnovo in northern Bulgaria. Tsarevets is 206 metres (676 ft) above sea level. It served as the Second Bulgarian Empire's primary fortress and strongest bulwark between 1185 and 1393, housing the royal and the patriarchal palaces, and it is also a popular tourist attraction.

The Patriarchal Cathedral of the Holy Ascension of God (Bulgarian: Патриаршеска катедрала „Свето Възнесение Господне“, Patriarsheska katedrala „Sveto Vaznesenie Gospodne“) is a former Eastern Orthodox cathedral in the city of Veliko Tarnovo, in north central Bulgaria. Located on top of the fortified Tsarevets hill in the former capital of the Second Bulgarian Empire, the cathedral was the seat of the Bulgarian patriarch from its construction in the 11th–12th century to its destruction in 1393.

The siege of Tarnovo occurred in the spring of 1393 and resulted in a decisive Ottoman victory. With the fall of its capital, the Bulgarian Empire was reduced to a few fortresses along the Danube.

The Holy Forty Martyrs Church (Bulgarian: църква "Св. Четиридесет мъченици", tsarkva "Sv. Chetirideset machenitsi") is a medieval Eastern Orthodox church constructed in 1230 in the town of Veliko Tarnovo in Bulgaria, the former capital of the Second Bulgarian Empire.The Holy Forty Martyrs Church, an elongated six-columned basilica, has three semicircular apses and a narrow narthex from the west.

Trapezitsa (Bulgarian: Трапезица) is a medieval stronghold located on a hill with the same name in Veliko Tarnovo in northern Bulgaria.