Birthdays are a great excuse to travel, check out the town or see friends you haven't seen in a while. Consider using the occasion to book a trip with friends to destinations like Australia, Jamaica or New York City.
Sandals Royal Plantation in Jamaica offers a lot of spa treatments for couples, as well as mini golf for friends. If a birthday falls during the cold season, this may be an ideal vacation away from home.
If traveling to celebrate with a romantic partner, the Park Hyatt Hotel in Sydney, Australia, is an excellent choice due to its view of Sydney Harbor.
Soho House in New York City is ideal for a weekend getaway, as its spa and steam room are perfect for relaxation. The hotel also has an outdoor rooftop pool, which would be a unique way to celebrate.
If these destinations seem too far, consider celebrating by having a birthday party hosted by a local venue. A bowling alley is appropriate for all ages, and individuals could make their birthdays even more unique by applying a theme, such as "Harry Potter" or "Mad Men." Guests can bowl in costume, and served snacks can represent food that's referenced within the theme.