The first Russian Orthodox church in North America and an Alaskan landmark.

This functioning parish church is also the site of many concert performances due to its wonderful acoustics.

Bubbling up from deep underground is the warm crystal clear water that fills the Warm Springs Pools, America's oldest spa.

The world's largest and most outstanding marl lake regularly changes color.

Created in 1972, the famous sculptor's intricately detailed monument to San Francisco is overflowing with city landmarks.

One of the most breathtaking railways in Europe also takes one of the steepest climbs, from fjord to mountain plateau.

A wondrous old library overlooking the nation's capital.

This Old Testament garden features 100 plants from biblical times.

A little-known hot spring haven right below the highway.

The first Russian Orthodox church in the Catholic city of Rome in almost a thousand years.

A huge boat-shaped hotel with a blood red pool and other oddities.

Architectureal fantasy quarter of Rome.

Breathtaking and huge 430 year old maps of Italy.

"The prettiest love letters in the world" ... or so said Lord Byron.

Small on the outside, big on the inside, this church is an astonishing act of visual deception.

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

A space dedicated to contemporary art and culture, co-chaired by fashion icon Miuccia Prada.

Go inside to really appreciate this 500-year-old technological masterpiece.

100 year tradition of fist fights, marked by marble footsteps.

Pilgrimage site for star-crossed lovers.

A rambling museum which honors the beauty in everyday objects.

Filled with goldfish swimming in a shallow pool of sea water, this ancient crypt is more wishing well than burial site.

The first botanical garden, a feather in the cap of the Grand Duke of Tuscany.

Medieval town turned hippie commune, once home to the secret foreskin of Jesus Christ.