The final resting place of the poets Shelley and Keats.

This massive circular sculpture may not be a portal to other worlds, but it does inspire the mind to imagine them.

A memorial to the deadliest terror attack during an unsettled period of Italy’s recent history.

Combing through this David Livingstone tribute will escort you on adventures through the looking glass.

There is only one place in the world where the corners of four nations come together.

Gustave Eiffel's masterpiece until the Eiffel Tower was built.

A whimsical Renaissance fountain sculpture from Florence, world-renowned for defying convention.

It's an incredibly beautiful city public space, with spacious rooms to study and admire the artwork.

National Mall monument to the inventor of the screw propeller.

It's been called “Detroit’s largest art object.”

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

From this scenic rockface, you can still see the paths Western pioneers followed.

A real small-town gym became the unforgettable home court of the Hickory Huskers in “Hoosiers.”

A set of multi-story murals honor Nelson Mandela and Desmond Tutu.

It celebrates the four men from South Africa who have won the Nobel Peace Prize.

All your favorite presidents of Zambia, in one convenient spot.

A memorial marks the spot where a plane crash killed several United Nations members on a peace mission to the Democratic Republic of the Congo.

Once a meeting point for Swahili slave traders, this ancient tree is now a monument to those killed by the slave trade.

Some of the world’s most popular songs came out of this building.

Step inside one of America’s rare poteaux-en-terre French houses.

Why would a Civil War general and president choose to be buried in a local Indianapolis graveyard and not Arlington National Cemetery?

Most of this “research national monument” still lies buried beneath the earth.

A lookout spot for the Andean condor, at the edges of one of the deepest canyons in the world.

Native builders raised these mounds centuries ago, before local families turned one into a cemetery.