Sofia's legislative center is continuously reinventing itself.

A charming beach town in Turkey captures all the colors of the rainbow.

The first mosque in Ghana is known as the "Mecca of West Africa."

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

The oldest housing complex in Riga is a mini timeline of architectural trends.

3,000 market stands in five former Zeppelin hangars.

Flamboyant architecture from the turn of 20th century.

Enormous statue of the Emperor of the Mongols.

The Neapolitan Cult of the Dead still cares for the skulls at this mini-Fontanelle.

A slightly creepy gallery of plaster cast models in the same museum as Michelangelo's David.

The mountaintop inspiration for Umberto Eco's "The Name of the Rose."

Architectural monsters are devouring this palace's every door and window.

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

This one-room museum is dedicated to Norwegian history and jokes.

At the very tippity-top of Europe is a cliff from which you can view the midnight sun.

Ruins of a late 1950s Polish ski jump ramp in the middle of the city.

An artificial date palm stands as a memorial to Warsaw's Jewish community.

This enormous 32-foot painting depicts Poland's greatest medieval battle in glorious detail.

The giant statue and its model solar system honor the native Pole who declared that the Earth revolves around the Sun.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

A statue honors the children who fought Nazis in Poland.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

This extravagant Art Nouveau rest stop features a million-dollar view of the Columbia River.