Handcrafted thermal spa washes away each night with the tide.

This incredible narrow-gauge mountain railway was created by a ceramic artist.

Large World War II gun emplacements and tunnel systems remain hidden near a remote end of Waiheke Island.

A galaxy of glowworms—larvae of a gnat—hides deep in the belly of these caves.

Modern art meets modern convenience in possibly the world's most architecturally important public bathroom.

Watch the seas clash at the place where according to Maori tradition, the spirits depart for their journey to the afterlife.

This unusual rock formation looks like an apple that has been neatly sliced in half.

These bronze sculptures sow whimsy by hamming it up on a pedestrian mall.

Impressively shaped, perfectly balanced boulders perched on the edge of a sea-cliff.

This boat represents the promise of undiscovered territory, a dream of hope, and progress and freedom for Iceland.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

The most powerful waterfall in all of Europe.

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

The largest salt farm in the Canary Islands is located at the foot of an active volcano.

Once the home of a hermetic monk, this cave now houses a small church.

Some of the greatest minds in the history of Hungarian art and science converged in this café.

A highly-criticized monument in Budapest has become the site of a makeshift Holocaust memorial.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

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

A hidden three-foot-wide house separates these two regal churches.

This charming stone church on the shore of Lake Tekapo is an icon in astrophotography.

Gardens representing parts of Asia, Europe, and the Mid East are tucked away among the Soviet-style buildings in East Berlin.

This medieval Estonian tower provides access to a series of tunnels that have been home to soldiers, punks, and fine art.