The evocative ruins of a 1,000-year-old hill fort lie within a popular tiger reserve.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

This gallery of prehistoric red ochre art lines the wall of a scenic segment in Utah's San Rafael Swell.

A sharp sculpture made of thousands of pieces of jagged glass.

These Egyptian statues have survived for 3,400 years and were an acoustic wonder of the ancient world.

One of the most well-preserved temples of ancient Egypt.

More than half of this Indian palace is drowned but it looks all the more spectacular for it.

The 953 windows undoubtedly make this the world's most beautiful screened porch.

Known as the leaning temple, the sacred structure has somehow developed a severe nine-degree slant.

The oldest housing complex in Riga is a mini timeline of architectural trends.

A black cat protests the City Guild in Riga's Old Town.

The convergence of two currents makes this a surprisingly pleasant getaway in the Arctic Circle.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

The wooden airship was the largest flying boat ever built.

Once an indicator of social class, the color blue has come to define this city on the edge of the Thar Desert.

A massive volcanic plug is now a protected area that hosts a number of bird species.

The rusting remains of the largest assembled WWII fleet on the West Coast.

This ancient structure is widely thought to be the oldest intact pyramid in the world.

This natural wonder is disappearing at an alarming rate.

Two stone columns flank the grand Venice square, but there were supposed to be three.

The most powerful waterfall in all of Europe.

These enlarged egg sculptures represent the native birds of eastern Iceland.

The largest pool at its elevation sits on top of one of the most expensive resorts in the world.

Singapore's landscaping project is home to 18 incredible Supertrees.