A favorite with sightseers, this Norwegian funicular provides easy access to a stunning view of Bergen and its environs.

Longest road tunnel in the world features an air treatment plant and the illusion of daylight.

Home to three historic ships from the age of Vikings.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

The modern birthplace of Irish freedom.

The railway carts travelers to central Athens's highest peak, which offers stunning vistas of the city.

An ancient octagonal weather station named for the eight Greek gods of wind.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

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

This irregularly shaped sea fortress has defended not one but three different sovereign states.

This endearingly discomfited urinating statue commemorates the sneaky pees had by us all.

A subterranean house of worship carved right out of the bedrock.

The Guardian of Tallinn.

Copenhagen's celebrated theme park and gardens.

Where the lovelorn find a home for their sentimental keepsakes.

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

A striking symbol of the Bulgarian capital.

A little sculpture with a large wardrobe.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

Cozy basement bar sports an inventory of over 2,000 beers.

Climb inside an iron crystal magnified 165 billion times its normal size.

This staircase in a lush tropical grotto was built by enslaved laborers and renamed to honor Queen Victoria's role in ending slavery in the British Empire.