Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

Dine amidst exotic plants at this former royal greenhouse.

This Austrian museum celebrates the work of famous forgers and their inimitable imitations.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

A massive, abstract lookout tower providing a panoramic view of Prague.

Egyptian Revival movie palace abandoned for decades and restored in 2013.

Hidden amid the old-world charm of Savannah is a museum dedicated to the world of oddities and criminal history.

This quirky curiosity shop takes its cues from the world's bazaars.

A display of magnificent stained glass windows is the first exhibit of its kind.

The beloved home to all publications indie, erotic, and punky.

An antiquated German apothecary on Chicago's North Side.

A lush green oasis in the middle of Chicago.

The iconic D.C. restaurant where the Cuban Missile Crisis was negotiated, now a Walgreens.

The bank that helped fund the Mexican-American War and the purchase of Alaska met its downfall after helping Augusto Pinochet launder money.

Bar full of oddities, specimens, artifacts and homages to the great dime museums of the past.

When it opened during the final years of the embargo, all the drinks and cigars were free.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

The Byzantine, pre-Columbian, and medieval art at this stately mansion are some of the most under-appreciated collections in D.C.

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

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

Carrying on the legacy of a short-lived experimental school tucked away in the mountains of North Carolina.

A wedding chapel, vintage clothing shop, and bar all under one roof.