The remains of a military communications outpost still stand on this Greek island.

Once considered one of the three great Augustinian churches in the Iberian world.

A park where you can watch the highway zoom past.

A dark, narrow tunnel that leads to a charming lake and waterfall.

An unusual slot canyon in the Aztec/Navajo Sandstone has a cross-section like an inverted old-fashioned keyhole.

Resting peacefully between two majestically-slanted trees, this roadside water trough circulates water peacefully.

An award-winning children’s garden enchants visitors at the intersection of natural beauty and fairy tales.

A large AIDS Memorial Pathway art installation provides a moment for quiet contemplation in this public park.

An unsigned roadside spring that is pure fun.

Internet rumors, often involving Icelandic singer Bjork, have abounded regarding this isolated outcrop of rock.

A historical puzzle lies at the origins of this structure.

This fog-enshrouded, antique corner store sells individual slices of wedding-fancy layer cakes from a window.

This sacred site lives up to its name with its majestic, color-splashed sandstone formations.

The evocative ruins of a medieval village.

The lasting remains of the region's once booming cement industry.

This humble bench is considered the most beautiful in the world.

Hidden in the garden of physicist Erwin Schrödinger's house is a life-size figure of a cat from his famous thought experiment.

A large, remote national monument highlights the typical geologic structure seen in Nevada.

This elaborate stone bridge over the Neisse river has sat in pieces since 1945.

Local stories say that if you drink from this well, you will return to Olympia.

Beneath the southern end of the Golden Gate Bridge is the “Gibraltar of the West Coast,” a fort built to protect the San Francisco Bay from naval attack.

Fantastic stainless steel dragon gates complete with mesh wings.

Designed to allow funerals to proceed over the River Dulnain.

These ruins saw a second life as a cemetery.