This giant iron playfully pays tribute to an early 20th-century architectural trend.

A wedding chapel, vintage clothing shop, and bar all under one roof.

This museum is dedicated solely to this millennia-old handheld cooling device.

A former hardware store near Yerba Buena is the official home of California's history.

A pair of mutilated bronze octopuses slump at the base of the monument honoring California's admission to the U.S.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

These magnificent city walls rise from the barren sun-baked Spanish plains like something straight out of a fairytale.

A well-preserved network of cavernous tunnels have spent silent centuries removing Toronto's waste.

Puzzling...this tree looks like an assemblage of dismembered monkey limbs.

Once the site of speeding horses, now home to picnickers and public concerts.

Approximately 250,000 people left homeless by the great earthquake and fires found shelter in Golden Gate Park.

A monumental cross hides in the trees in Golden Gate Park.

Barely visible foundations remain where Stow Lake’s “observatory” once welcomed visitors.

An ancient Egyptian temple in the middle of Madrid, Spain.

One of the only single-person private gravesites in New York City.

Visit the monolithic tomb of America's most famous general.

This was one of the first (and last) university-built and operated nuclear reactors.

Graffiti from the 16th and 17th centuries cover the walls of this part of the Tower of London.

Plundered and left asunder by grave robbers, this ancient necropolis has been painstakingly pieced back together.

This Philly cemetery is the eternal home of many famous area residents, including Rocky Balboa's wife.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

Built on the remains of one the Incas’ most important gathering spots, this square keeps the spirit of a fallen empire alive.

Situated on a sacred Inca site, this 16th-century cathedral took nearly 100 years to build.

This geometric feat is a testament to the Incas' mesmerizing architectural abilities.