Architecture

Once a thriving business district, this former shopping area is now an urban ghost town in the heart of the city.

Built around 1845, this house was occupied for 100 years, serving as a home to a prosecuting attorney, a Union Civil War general, and a wealthy socialite.

This decoration above a door, an unofficial family crest, is said to come alive during the night to try to get free of the stone.

An echo chamber with a waterfall wrapped around its base at the Embassy of Canada in Washington, D.C.

Air-raid tunnels hidden beneath this opulent hotel provided shelter and an escape route—and one of the world's longest slides.

A medieval tower with a suspended iron cage used as an open-air jail for criminals who were exposed as a warning.

Though these human-made islands were constructed as an escape for the wealthy, they rarely see many visitors.

An icon of the city, this chapel features an amazing dome ceiling and offers panoramic views.

The smallest covered bridge in Maryland.

Originally dubbed "Retirement" by the Navy Commodore who built it in 1780, this beautiful mansion is now the centerpiece of a suburban community park.

The oldest remaining theatre in New South Wales.

The Catskills retreat of naturalist writer John Burroughs.

This lesser-known Frank Gehry building houses a treasure trove of cinema history.

The oldest functional consecrated church on Mustang Island.

This now abandoned arch bridge was constructed during the Great Depression.

This ancient stone bridge dates back to the early Middle Ages.