Architecture

The sanctuary seems to either float atop the water or sink into the dirt, depending on the water level.

An ornate private entrance to the Vienna subway built specifically for the emperor.

A magnificent church designed by world-renowned architect, Frank Lloyd Wright.

A home designed to be on the cutting edge of comfortable, low-cost living.

This historic structure has been used as a mosque, a barracks, a prison, a school, and a bakery.

A lavish 16th-century mansion filled with spectacular staircases, fantastic frescoes, and gorgeous gardens.

This 19th-century Hamptons windmill was once home to modernist painter Agnes Pelton.

England's most famous front door has an accidental doppelganger.

The first all glass and steel residence in the United States.

For part of the year, this innovative greenhouse is painted white to keep the plants from getting scorched.

A beloved upside-down beacon off the coast of Northern Ireland.

This graffitied 19th-century building was a prototype of European industrial architecture.

A medieval church built into an ancient cave.

A beautiful Greco-Roman structure houses a well once believed to have healing powers.

The former residence of Elizabeth “Mumbet” Freeman, an enslaved African-American woman who successfully sued for her freedom.

One man has spent decades faithfully constructing this unique brick and cinderblock castle.

This piece of a Renaissance-era Spanish castle remained lost for decades.