Istiqlal Mosque is Indonesia’s largest mosque, with space for more than 10,000 worshippers. Completed in 1978 and designed by Frederic Silaban, the building combines modern lines with traditional Islamic design. Visitors can admire the soaring dome and towering minaret, and explore the spacious prayer hall outside of prayer times.

Frösö Church, one of Jämtland's major tourist attractions, holds a rich history dating back to the 12th century. Archaeological findings suggest the church was built on a former pagan sacrificial site. Despite a destructive fire in 1898, the church's interiors were salvaged, and it remains a testament to the region's heritage. Renowned for its association with composer Wilhelm Peterson-Berger's compositions, the church's picturesque surroundings contribute to its popularity as one of Sweden's preferred wedding venues.

While in Cologne, you can visit Germany's oldest city hall, with parts dating back to the 11th century. Over time, it has picked up a mix of styles—Gothic tower, Renaissance loggia, some modern touches. The 61-metre tower is covered in carved figures, including some cheeky ones from local history, and the bells chime four times a day. There’s also a mechanical face called the Platzjabbek that sticks its tongue out on the hour. Inside, the Hansasaal is the main historic hall—worth a look if it’s open.