This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

A floating cat sanctuary on an Amsterdam canal.

Peek through the gates at this oasis from the city, full of Old English charm.

The oldest surviving synagogue in New York City is now a soaring art space.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

Jurassic theme park in the small town of Erlian.

This fairy-tale, neo-Gothic church in the Azores is a world of magical realism.

A stunning 18th-century site where pilgrims ascend by a series of punishing stairs only to return via funicular.

Picturesque intersection of witchcraft and ancient Christianity.

A unique seaside cave where Aleister Crowley faked his own death.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

An engineering marvel at the time of its construction, this cross-border waterway sought to connect the Black Sea to the Baltic.

Glowing orb in Minsk houses 8,600,000 items.

An Argentinian businessman facing terminal cancer built this whimsical medieval village using salvaged materials.

The inspiration for the Patagonia Clothing logo, Cerro Fitz Roy turns pink at sunrise.

This stunning mass of ice spans 121 square miles and is still growing.

These sea caves are the source of Xigia Beach's distinct aroma.

The ruins of an ancient Roman tomb hidden in the basement of a trendy clothing store.

An autonomous republic of Orthodox monks.

The railway carts travelers to central Athens's highest peak, which offers stunning vistas of the city.