Besieged by war, this castle ruin has crumbled into a peaceful picnic spot.

Ancient human remains unearthed around the iconic monument.

The first archaeological site discovered by aerial photography.

A breathtaking 19th-century trail overlooks Lake Tahoe.

California's first suspension bridge.

An architectural marvel that dates back to the zenith of Indian architecture.

Victoria's largest salt lake is a favorite haunt for photographers and stargazers.

The second-largest natural arch in the Chartreuse Mountains.

This 1st-century CE Roman bath sits under a carpark.

A 2,000-ton rock resting in a state of a delicate balance.

A breathtaking viewing platform over the Alps.

This unique formation is characterized by hexagonal basalt rocks stacked in unique formations.

This 200-meter-high waterfall marks the site of Achilles’s immortal baptism at the mouth of the River Styx.

This stunning limestone waterfall is the highest in Estonia.

During World War II, blimps were a key part of the United States' defense against German U-boats—this building could house a dozen of the armed airships.

An ancient fortification lives on in this Chinese city.

Centuries of warfare, tragedy, executions, and poetry come together in this 13th-century fortress.

This grave marks the final resting place of pioneer John Chapman, better known as Johnny Appleseed.

Discover a beautiful natural paradise, minutes away from a thriving city.

This massive complex is made up of hundreds of smaller temples that date back to the ninth century.

This trail follows unique stone railroad tracks and a historic waterway to the south coast of Devon.

Canada's largest dinosaur skeleton was hidden away in storage for more than 40 years.

This crescent-shaped beach is said to glow under the light of a full moon.

This small crenelated building was built by a British aristocrat who supported the American Revolution and may have named it in memory of a pivotal battle.