A gorgeous, Gaudí-esque stairway constructed in the city of Istanbul by a prominent Jewish family.

An Art Nouveau gem hides beneath the layers of city grime obscuring this once-magnificent building.

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

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

A marvel of Byzantine engineering under the streets of Istanbul.

Where a Japanese government official issued transit visas to Jews fleeing from Nazi-occupied Poland.

This magnificent Art Deco church is a reflection of Lithuania’s turbulent history.

The oldest funicular in Lithuania has been climbing this steep hill since 1931.

A 15-foot-tall statue of the head of the Sopranos family greets passengers at a train station in southeastern Lithuania.

Things aren't quite what they seem at this mind-bending museum.

A wealthy aristocratic family built this Disney-worthy, fairy-tale castle.

Home of Howard Hughes' Spruce Goose.

The wooden airship was the largest flying boat ever built.

Post office plaque commemorates local resistance to a cult invasion.

While it is not equipped to peer into outer space this observatory looks like it was built on the moon.

Despite a legend that says this highest peak in Oregon was climbed in high heels scores of people have died on its slopes.

You might know it as the Overlook Hotel, but the inside is not going to be familiar.

A Roman-style column in Oregon hides a spiral staircase inside.

Only known mainland rookery of the threatened Stellar sea lion.

While this monument tile is shrouded in mystery it also marks the end of the longest ever human chain.

This seaside pine grove features an exclusive watchtower that presents amazing views.

A historic scientific breakthrough that crosses nine borders.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

This charmingly homemade amusement park has been growing for 40 years.