Erotic art covers the walls of the largest ancient pleasure palace.

"Stairs of the Turks", a chalky white cliff eroded conveniently into stairs, allowing for easy pillaging.

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

This almost-forgotten underground dungeon housed several convicts over the years, including Caravaggio.

Stone Age solar temple is aligned with the sun on each equinox and solstice.

Overshadowed by other, more famous Maltese catacombs, this ancient burial chamber has one of the best examples of a ritual agape table.

The remains of a 1st-century aristocratic Roman town house featuring beautiful well-preserved mosaics.

Ancient mysterious ruts carved in the bedrock.

Burial grounds for more than 1,000 bodies deep under the modern town of Rabat.

These lesser-known Maltese catacombs date back over 1,700 years.

The ruins of a megalithic monument sit right in the garden of a luxurious Maltese resort.

Enigmatic tombs and cave dwellings on the outskirts of a rural village.

Residents of Fremont in Seattle have considered it the center of the universe since the 1970s.

Spanning an elevation of 160 feet and containing 388 steps, this is Seattle's longest staircase.

Statue of Lenin, from Cold War era Czechoslovakia, now in a neighborhood of Seattle.

This former coal gasification plant found a curious second life as a popular public park.

A giant Troll lurks under one of Seattle's oldest bridges.

A museum and shop on Bourbon Street located in the former home of the second Voodoo Queen of New Orleans.

Experience a charming 1930's version of "infotainment."

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

The drama of nature in full effect in this Nevada State Park.

This golf ball–shaped former desert real estate office now houses a UFO museum.

Most-visited and most-photographed slot canyon in the American Southwest.

Rippling sand dunes frozen in the Arizona rock.