Some of the most popular sites include:

• UNESCO's World Heritage sites - Ancient City of Nessebar, Boyana church, Madara Riderstone carving, Rila Monastery, Rock-Hewn Churches of Ivanovo, Thracian Tomb of Kazanlak, Thracian Tomb of Sveshtari being the historical, and Pirin National Park, Srebarna Nature Reserve being the natural.
• Monasteries of Bulgaria that have been centres of Bulgarian culture during the Ottoman rule such as Bachkovo Monastery, Troyan Monastery, Dryanovo Monastery, Osenovlag Monastery, etc.
• Natural creations in the Bulgarian mountains that are a combination of awe to the beautiful natural forms and the exciting feeling of danger in the face of the sharp edges and deep ravines created solely by wind and water. Some of the most popular natural creations are the caves Dyavolsko Garlo (The Devil's Throat), Ledenika (The Ice-Cold), Magurata which has cave paintings on its walls and Snezhanka (Snow White), the canyons of Trigrad and the river Erma, Chudnite Mostove (The Marvellous Bridges) rock phenomena, and the natural pyramids near the town of Melnik and the ones near the village Stob.
• Fortresses from the Middle Ages such as Tsarevets in Veliko Tarnovo, Baba Vida in Vidin, Tsari Mali Grad near Samokov, the Fort of Samuil near the village of Strumeshnica and the Fort of Asenevtsi near Asenovgrad.
• Remains from the cities of Ancient Greece and the Roman Empire in Sofia, Plovdiv, Nessebar, Sozopol, Razgrad and many many other cities and towns.
• Architectural historical reserves like the towns of Koprivshtitsa, Bozhentsi, or Daskalolivnitsa in the town of Elena, Plovdiv's Old Town, the Varosha neighbourhood in Blagoevgrad and the neighbourhood of Arbanasi in Veliko Tarnovo.
• Sacred places of Perperikon and Rupite, the many ancient and medieval churches in the country, and the tombs of the Thracian kings.

CITIES

Sofia — the capital and largest city in Bulgaria, one of the oldest in Europe, featuring a nice town centre with Renaissance and modern influences, many parks including the National park "Vitosha" (which is just minutes away from the city centre), a vibrant nightlife, over 250 historic landmarks and architectural monuments, and plenty of cultural places of interest.

Burgas — known for its commercial port (Port of Burgas) and oil refinery, the city has a picturesque waterfront, nearby downtown and rich shopping areas that make it popular with tourists. In recent years the city hosts the popular music festival "Spirit of Burgas".

Gabrovo — A popular tourist destination near the geographic the centre of the country, providing quick access to other cities, such as Veliko Tarnovo and Kazanlak, as well as the Balkan Mountains and the ski-resort of Uzana. The architectural-ethnographic resort Etar is situated near the town.

Pleven — a historical city, famous for its Panorama monument and for its beautiful parks and fountains in the city centre.

Plovdiv — Bulgaria's second-largest city, situated on both banks of the Maritsa river, it boasts a lovely shopping promenade and many parks. It's an ancient city with influences from many epochs including a preserved ancient Greek amphitheatre, a Roman stadium, a "Bulgarian revival" style Old Town, and a variety of mosques, catholic cathedrals and orthodox churches all across the city. Plovdiv is also famous in the country for its hectic nightlife. Though the city has a modern lifestyle it is one of the oldest in the world and debatable - the oldest in Europe. Be sure also to take a side trip to Bachkovo Monastery which is about an hour away.

Rousse — known as the "Small Vienna", the town centre offers an impressive architectural Baroque ensemble that cannot be found anyplace else within Bulgaria. The city boasts various places of interest among which the Sexiginta Prista Roman Castle, Rousse's Theatre, The House of Caliopa, and the Pantheon.

Varna — the nation's third-largest city is a lovely combination of a beach resort with a famous nightlife and an urban centre. Varna's coast garden is filled with entertainments and can also be appreciated by art lovers.

Veliko Tarnovo — picturesque university city near the Yantra river that was the capital of the medieval Bulgarian Empire and still has one of the best-preserved medieval fortresses on its background.