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

Sofia's legislative center is continuously reinventing itself.

A vast Communist-era exhibition space in the Bulgarian capital.

"Holy Wisdom" overlooks the city that became its namesake.

A striking symbol of the Bulgarian capital.

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

The 20th-century chapel’s intricate woodwork includes amazing details, most notably angels playing bagpipes.

Touching this 18th-century Scottish philosopher’s toe allegedly conjures good fortune.

Early Medieval stones sit on display at the beautiful Govan Old Church in Glasgow.

From here, the loch appears to take the shape of mainland Scotland.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

This historic pub has maintained much of its 1906 decor, including a small sequestered room for women, where orders were slipped through a tiny window.

This Scottish bridge seems to compel dogs to leap to their death.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Nestled amid the peaks and lochs of the Scottish Highlands, this inn and pub has played host to outlaws and ghosts.

Every September, international competitors flock to the flooded quarries of a tiny Scottish island.

Legend says a witch conjured the world's third largest whirlpool to protect Scotland from a nasty pirate.

This eclectic sanctuary is a hodgepodge of various architectural styles, all crammed into one building.

A mysterious ruin shrouded in more folklore than fact.

The "Prussian Versailles" that is as glorious today as when it was built.

The ancient mosaics here are considered among the finest in the world, and serve as a stunning record of Greco-Roman daily life.

These ancient sea caves hold Britain's highest concentration of Pictish rock carvings.

Memorial to the Titanic engineers that died working to hold back the sea.