Fittingly, America's museum of architecture is itself a magnificently designed old building.

This grand gothic brewery has been pumping out suds for over a hundred years.

A replica of where the Last Supper was held.

The only free-standing, vertical sundial in the US was keeping standard time before it was even invented.

This titanic steel chain linking two buildings was installed without permission but instantly beloved.

A former mental hospital founded in the 1930s by a eugenicist who advocated for the forced sterilization of patients.

This once-palatial plantation may have been the site where a draft of the Declaration of Independence was written.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.