Architecture

Once a spa resort, then a tuberculosis sanatorium, and now a crumbling ruin.

These crumbling ruins are all that's left of the ancestral home of Clan Crawford.

A design by master architect Alvar Aalto in a small village in the Apennines near Bologna.

High rises built to house displaced military personnel and their families form a unique cylindrical shape.

This historic Art Deco building embellished with local tropical fruits had fallen into disrepair before a recent restoration.

One of the oldest Masonic buildings in England, and still in use today.

Controversially restored in the 1970s, this giant 15th-century mosque is shrouded in legend.

This Castilian castle has stood the test of time like few others.

Built between 1901 and 1908, this building is one of the most iconic examples of modernist architecture in Spain.

Tulsa's historic skyscrapers define the oil boom era of Art Deco construction, and are known for their ornate arched lobbies.

This unique blend of Japanese and Western architecture provides a glimpse into the lives of the Japanese elites who once ruled Taiwan.

Over 80 years old, this hand-dug tunnel is a Chinese-style portal to another world.

A former salt mine is now a cool picnic spot for families and asthmatics.

The scorched Lisbon church that survived two earthquakes and a massive fire.

A Japanese-era military tunnel is now a psychedelic art exhibit.

The lost library of Alexandria, revived as a spearhead of cultural preservation.