The ruins of a once-mighty medieval palace are hidden away in otherwise modern London

This hand-painted advertisement is a literal sign of encouragement, however unintentional.

The ground on which Shakespeare’s initial playhouse once stood.

A timeline of London history on the Thames Path, installed in 2014

Abandoned railway line circling the city of Paris.

Unique massive sculpture on a mound at a public park just outside of Paris.

A short distance from the Eiffel Tower is the final resting place of several of the city’s more well-known and interesting characters.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

One of Jeff Koons’s largest sculptures and his first commemorative work.

An English cenotaph honoring an American feminist icon.

The tomb of a deposed king that drew medieval pilgrims to Gloucester

Inspired by the colossal pyramids at Giza, this 15-foot structure is believed to be the first funerary pyramid in Great Britain.

One of the most studied Iron Age settlements in Europe.

Evidence of a bullet that nearly killed King Charles I—or is it?

An interactive museum-like experience takes visitors back to 1980s Communist Bulgaria.

An Oxford museum where visitors can have tea with the Mad Hatter and climb through the wardrobe to a fantasy land.

The shop where the girl who inspired the beloved character once bought sweets is now a book-themed commercial curiosity.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

The Sun King's military models, saved from the Louvre.

This charming, flower-filled, paved cul-de-sac is filled with artists' studio-houses built in the 1920s.

This mural painted by Keith Haring was done without payment as a gift to entertain the children at the Hôpital Necker.

A popular shrine where the Blessed Virgin allegedly appeared in 1830, displaying a holy armchair and two incorruptible remains of Lady Saints.

Saintly bones pressed into a wax effigy of a Catholic superstar.

A glamorous hotel that once accommodated French resistance fighters and concentration camp survivors.