A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

After his presidency, George Washington planned to live only a few blocks from the Capitol building.

The tunnel under the Capitol Building where Congress takes out its trash.

An unassuming, powerful monument north of the U.S. Capitol bears witness to the resilience of Japanese Americans during a time of grave injustice.

A 1,100-ton train fell through the floor in 1953. Workers got it patched up in just 72 hours.

An easily overlooked memorial to a Ukrainian famine-genocide that killed over 4 million people.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

One of the first Second Empire-style buildings constructed in North America.

Largest Roman Catholic church in North America.

An overlooked oasis of quiet on the grounds of Washington's monumental basilica.

This grisly headstone doesn’t seem to be resting in peace.

The towering figures were created from the cemetery's fallen old-growth trees.

The first woman to become a member of the parliament of Iceland.

This massive redwood tree has stood in Northern California for nearly 2,000 years.

Under the shadow of its towering parent tree, a rare specimen of sequoia produces ghostly white leaves.

This massive solar generating facility in the Nevada desert has been plagued by difficulties.

Inscribed on the gate are the names of 29 figures from the University's first five centuries.

In the palace with a thousand doors, not all of them are guaranteed to lead you somewhere new.

The United States' first transcontinental automobile road came to its end at this spot in San Francisco's Lincoln Park.

A tribute to the artist and activist who created the rainbow pride flag.

This massive piece of artwork weighs more than 250 tons, and was designed as a tribute to the first president of the United Arab Emirates.

This work of engineering is imbued with elegance and ingeniousness.

Some believe that the stone once used to coronate Scottish kings resides inside this bar.

These animal carvings stand as a representation of India and Britain.