The only Bahá'í house of worship in North America and one of only a handful worldwide.

The architect of this fanciful complex called it an "oasis for humanity and nature in a sea of rational houses."

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

Brussels' favorite peeing boy has a sister.

A little sculpture with a large wardrobe.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

As the Dead Sea continues to deplete, massive sinkholes open along its banks.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

One of several skulls claiming to belong to the beheaded St. John the Baptist is on display at this Roman church.

The secret cells in the basement of the KGB's Estonian "Grey House" have been preserved as a grim Cold War museum.

A secluded art gallery hidden within the cellars beneath Tallinn’s medieval monastery.

World War II bunker still standing on the New Jersey beach.

The rusting remains are visible sticking out of the waters of the Delaware Bay.

This elaborate towering structure was once famed for its revolutionary height.

Yo, Adrian!

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.

Orthodox church partially financed by Tsar Nicolas II.

This urban drawbridge gained eternal pop culture fame when the Blues Brothers jumped it while it was raised.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

An enormous park-like oasis, full of famous Chicagoans’ graves.

A floundering Polish shipyard was once the soul of the Solidarity movement that capsized communism.

This small shrine is dedicated to the designer of the first Russian fighter jet and his brother, who became Chairman of the Presidium of the Supreme Soviet.

A huge wooden clock that is so beautiful its creator was forcibly blinded.