This artistic temple brings together multiple architecture styles, but is only an example of one.

The home of a neoclassical master is now a shrine to his chosen art style.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

The first declared National Monument in the United States.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

A star-shaped fortress town fort built in the geometric model of the Renaissance utopian city.

This Roman amphitheatre was also the location of the first gladiator school.

Unscathed for almost 2,000 years, the best preserved Roman triumphal arch is in a small southern Italian city.

This Italian ski resort rose to fame when Benito Mussolini was held prisoner there and then rescued by the SS.

A medieval fountain lined with 99 unique stone faces whose origins and meaning remain unknown.

Seven centuries ago, its holy door opened for a forgiveness procession ritual that was later "copied" by the formal Catholic Jubilee.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

A small window on Via Piella offers a lovely and rare peek at Bologna's lost canals.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

The oldest preserved Triumphal Arch in Northern Italy

This 2,000-year-old Doric bridge is still open to pedestrian traffic to this day.

Latvia’s first skyscraper, nicknamed ‘Stalin’s birthday cake.’

An abandoned masterpiece of Soviet Brutalist architecture.

An empty relic of the Moscow Olympics crumbles away in Estonia's capital.

A monument commemorating the 852 lives lost in the sinking of the MS Estonia.

During the Soviet era, the spire of this longstanding church was used as a radio transmission tower.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

The silly symbol for an underground protest group is now scattered around the city.

From Carthage's Hannibal to riders of the Tour de France, many have crossed this scenic route through the Alps.