Outstanding, eerie frescoes and decorations fill this 19th-century monastery.

This ancient theater, restored in the 20th century, lives on as a venue for dramatic and musical performances.

UNESCO-protected ancient burial ground.

An ancient Thracian city where fire rituals were practiced on the largest cult altar in Southeast Europe.

A spectacular Bulgarian cave resembling a devil's head with a waterfall rushing down its throat.

This tiny Bulgarian town offers a stunning location in the mountains and a storied history.

This historic black and white monastery is one of Bulgaria's architectural jewels.

Bizarrely shaped rock formations in northwest Bulgaria come with equally bizarre legends.

An abandoned saucer-shaped monument in the Bulgarian mountains.

A statue based on a tragic Japanese nursery rhyme, commemorating San Diego's sisterhood with Yokohama.

A dramatic coastline that’s home to a rare pine tree.

Built for an exposition in 1915, these horticultural displays have stood the test of time.

An ode to the friendship between four Pacific Rim countries.

A sculpture of the famous photograph stands on San Diego's "Greatest Generation Walk."

The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.

This little blue house pokes out over the campus of UC San Diego, seven stories high.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

An art installation that will challenge your understanding of reality and perception.

Once a highly polluted body of water has now been transformed into a gorgeous lagoon.

This seemingly random 30-foot statue of an oryx in Qatar's capital was a mascot for the 2006 Asian Games.

This 23-foot-tall bear stands amid the hustle and bustle of Hamad International Airport.

This unconventionally beautiful landscape possesses stunning scenery you won't easily forget.

Fourteen sculptures showing the development of a fetus stand outside a hospital for women and children.

Four steel monoliths stand in the Qatari desert, in a breathtaking work of large-scale art by Richard Serra.