Where was The Union filmed? Istria, Grand Hotel London, and all the locations

The hotel in the opening sequence in Trieste, Italy, is the Savoia Excelsior Palace.

Built in 1911, this luxury hotel overlooking the Adriatic Sea combines historic grandeur with modern elegance for about $150 (115 GBP) per night.

The bridge scene was filmed over the Grand Canal of Trieste, a picturesque waterway in the heart of the city.

Built in the 18th century to allow ships to unload goods directly into the city center, the canal is flanked by historic buildings and charming cafes.

The street scenes in Mike's town were filmed in Bayonne, New Jersey.

Located on a peninsula between Newark Bay and New York Harbor, just south of Jersey City, Bayonne is known for its industrial heritage.

Completed in 1931, the iconic Bayonne Bridge, which connects the city to Staten Island, New York, was once the world's longest steel arch bridge.

The Wittpenn Bridge, where Mike and his colleagues work, was CGI'd in the background of the scene.

Opened in 1930, the Wittpenn Bridge spans the Hackensack River, connecting Jersey City and Kearny.

The original structure is currently being replaced with a modern one to improve safety and facilitate both vehicular and maritime traffic.

The fictional Wilson's pub is actually a bar called Shorty's on 12th Street and Broadway in Bayonne.

The city has also been used as a filming location in top productions such as War of the Worlds, Eternal Sunshine of the Spotless Mind, and A Beautiful Mind.

Mike wakes up at the The Savoy, a historic hotel located on the Strand, overlooking the River Thames.

Opened in 1889, it was the first luxury hotel in Britain, known for its opulent interiors and famous guests, including royalty and celebrities.

You can stay in one of the Savoy's suites for around USD 700 (540 GBP) per night.

The trio is having coffee at the small Bay Leaf Cafe at 19 Tottenham Street in Fitzrovia.

The Harry Potter's wand is the BT Tower, the famous 620-foot telecommunications tower.

Completed in 1964, it was originally built as the Post Office Tower and served as a key hub for microwave communications in the UK.

The BT Tower does not house the headquarters of any secret organization, although it once had a revolving restaurant with panoramic views of the city.

The Union chose a scenic location to train Mike, next to Tower Bridge.

However, this building is not actually located there, it was just CGI'd into the cityscape.

The next action scene was filmed at the Seven Dials in London's West End, where seven streets converge in the heart of Covent Garden.

The Gladstone Arms is a pub a little further away, in the Borough area.

The fictional London Grand Hotel is the St Pancras Renaissance Hotel, a stunning Gothic Revival complex adjacent to St. Pancras International Station.

Did you know that this magnificent building was almost demolished in the 1960s? By that time, the Midland Grand Hotel, which opened in 1873, had fallen into disrepair and plans were made to tear it down.

However, a campaign led by poet and architectural historian Sir John Betjeman helped save the building, recognizing its architectural significance.

The rooftop bar overlooking the dome of St. Paul's Cathedral is Madison Restaurant.

Located on the top floor of the One New Change shopping centre, this spot offers stunning views of the London skyline.

The Albert Bridge is a picturesque suspension bridge linking Chelsea and Battersea.

Completed in 1873, the bridge is known for its distinctive, ornate design featuring colorful, decorative details and its delicate, ironwork structure.

The exterior of the famous Royal Albert Hall and the Albert Memorial are also featured in a short scene.

The Royal Albert Hall, completed in 1871, is a renowned concert venue known for its distinctive circular architecture.

The Albert Memorial, unveiled in 1872 in Kensington Gardens, is a grand Gothic Revival monument honoring Prince Albert's contributions to the arts.

One of the first scenes in Istria, Croatia, was filmed at the old Chapel of St. Agnes, located on a hill in Croatia near the village of Rakalj.

Istria is a quaint peninsula located at the crossroads of Italy, Slovenia, and Croatia, known for its dramatic Adriatic coastline and charming medieval towns.

The region boasts a unique blend of Italian and Slavic influences, evident in its cuisine and architecture.

The beginning of the action sequence was not filmed in Croatia, but in the tiny neighboring country of Slovenia.

The elegant Tartini Square in Piran, named after the famous violinist and composer Giuseppe Tartini, is surrounded by historic buildings, including the Town Hall and the Venetian-style Palazzo.

The church is the Our Lady of Health Church, also located in Piran.

The Rakalj red lighthouse is located just below the Chapel of St. Agnes hill, on the Adriatic Sea.