This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

A library where thousands of books explain how to avoid another Great Recession.

An artist's whimsical transformation of everyday objects.

This mundane post marks the old location of the city's main postal hub.

This sculpture of disembodied body parts forms a poignant memory of the horrors of World War II.

Edinburgh’s version of the Sistine Chapel is this former church, with an interior covered in paintings done by one woman over the course of nearly a decade.

This pyramid is dedicated to all those who suffered martyrdom for civil and religious liberty in Scotland.

A striking glass tribute to two sisters who suffered during Scotland's "Killing Time."

The lost Latin words were reconstructed using the holes from the nails that once pinned them in place.

A unique underground structure dating back to the 1st century BC.

Sculpture of a legendary French dragon.

An iconic red telephone box turned tiny art gallery.

This huge concrete map of Scotland was built as a thank you gift from a Polish soldier.

Overlooking the burial ground is a tower designed to prevent thieves from snatching the recently deceased.

A secret garden in a picturesque Edinburgh village has inspired artists for centuries.

Enter this small nook and you'll be surrounded by 360 degrees of street art.

A succession of eerily contemplative iron figures lead from a Scottish museum to the sea.

A multi-storied painting that depicts the area's rich and diverse maritime history.

This extinct volcano rises above Edinburgh and is special for its panoramic views over the city.

The U.K.'s first underground railway line is now a lively thoroughfare for runners and cyclists.

A beautiful Greco-Roman structure houses a well once believed to have healing powers.

The modern birthplace of Irish freedom.

The enchanting archway is the only surviving portal into Dublin’s lost medieval wall.

This neon landmark has been posing this deadpan question to follicly-challenged Dubliners for over 50 years.